Improving links (http -> https) (#425)

.github/workflows/test.yml

@@ -12,7 +12,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest, macos-latest]
-        go-version: [1.18.0]
+        go-version: [1.18.3]
 
     runs-on: ${{ matrix.os }}
     steps:

README.md

@@ -55,7 +55,7 @@ $ tools/upload
 This work is copyright Mark McGranaghan and licensed under a
 [Creative Commons Attribution 3.0 Unported License](http://creativecommons.org/licenses/by/3.0/).
 
-The Go Gopher is copyright [Renée French](http://reneefrench.blogspot.com/) and licensed under a
+The Go Gopher is copyright [Renée French](https://reneefrench.blogspot.com/) and licensed under a
 [Creative Commons Attribution 3.0 Unported License](http://creativecommons.org/licenses/by/3.0/).
 
 
@@ -66,12 +66,12 @@ Contributor translations of the Go by Example site are available in:
 * [Chinese](https://gobyexample-cn.github.io/) by [gobyexample-cn](https://github.com/gobyexample-cn)
 * [Czech](http://gobyexamples.sweb.cz/) by [martinkunc](https://github.com/martinkunc/gobyexample-cz)
 * [French](http://le-go-par-l-exemple.keiruaprod.fr) by [keirua](https://github.com/keirua/gobyexample)
-* [Italian](http://gobyexample.it) by the [Go Italian community](https://github.com/golangit/gobyexample-it)
+* [Italian](https://gobyexample.it) by the [Go Italian community](https://github.com/golangit/gobyexample-it)
 * [Japanese](http://spinute.org/go-by-example) by [spinute](https://github.com/spinute)
 * [Korean](https://mingrammer.com/gobyexample/) by [mingrammer](https://github.com/mingrammer)
 * [Russian](https://gobyexample.com.ru/) by [badkaktus](https://github.com/badkaktus)
 * [Spanish](http://goconejemplos.com) by the [Go Mexico community](https://github.com/dabit/gobyexample)
-* [Ukrainian](http://butuzov.github.io/gobyexample/) by [butuzov](https://github.com/butuzov/gobyexample)
+* [Ukrainian](https://butuzov.github.io/gobyexample/) by [butuzov](https://github.com/butuzov/gobyexample)
 
 ### Thanks
 

examples/base64-encoding/base64-encoding.go

@@ -1,5 +1,5 @@
 // Go provides built-in support for [base64
-// encoding/decoding](http://en.wikipedia.org/wiki/Base64).
+// encoding/decoding](https://en.wikipedia.org/wiki/Base64).
 
 package main
 

examples/base64-encoding/base64-encoding.hash

@@ -1,2 +1,2 @@
-cd00d89ad0a31e48d6a2e2adc2e8d65b0f70dc73
-S7ff3UgzNlG
+47f0317643bc5107af6fae64cb0fdad1260ead37
+yztzkirFEvv

examples/closures/closures.go

@@ -1,5 +1,5 @@
-// Go supports [_anonymous functions_](http://en.wikipedia.org/wiki/Anonymous_function),
-// which can form <a href="http://en.wikipedia.org/wiki/Closure_(computer_science)"><em>closures</em></a>.
+// Go supports [_anonymous functions_](https://en.wikipedia.org/wiki/Anonymous_function),
+// which can form <a href="https://en.wikipedia.org/wiki/Closure_(computer_science)"><em>closures</em></a>.
 // Anonymous functions are useful when you want to define
 // a function inline without having to name it.
 

examples/closures/closures.hash

@@ -1,2 +1,2 @@
-6713bdbb6de0d7d484422517dd77316c8b9f0a7a
-66Lgw9iIIch
+6514e124c8127250a2eecfadc9708181e51f9603
+NpgpzS8ZG8y

examples/command-line-arguments/command-line-arguments.go

@@ -1,4 +1,4 @@
-// [_Command-line arguments_](http://en.wikipedia.org/wiki/Command-line_interface#Arguments)
+// [_Command-line arguments_](https://en.wikipedia.org/wiki/Command-line_interface#Arguments)
 // are a common way to parameterize execution of programs.
 // For example, `go run hello.go` uses `run` and
 // `hello.go` arguments to the `go` program.

examples/command-line-arguments/command-line-arguments.hash

@@ -1,2 +1,2 @@
-d60d1c9cb5dbbb748cf3b692334076951cea7d59
-oSxtj7v_v1K
+ad871e829d1457d97d0f1c1af77e39f6942ac5a5
+UYCEvh9d2Zb

examples/command-line-flags/command-line-flags.go

@@ -1,4 +1,4 @@
-// [_Command-line flags_](http://en.wikipedia.org/wiki/Command-line_interface#Command-line_option)
+// [_Command-line flags_](https://en.wikipedia.org/wiki/Command-line_interface#Command-line_option)
 // are a common way to specify options for command-line
 // programs. For example, in `wc -l` the `-l` is a
 // command-line flag.

examples/command-line-flags/command-line-flags.hash

@@ -1,2 +1,2 @@
-08e716a5ee3b5f74ef826d7b5ce157cb3b44c4f7
--zzqphwtdJq
+9cca50e58f488570cc8e92dde37582ea5ee04bf3
+IUPZlYSigc3

examples/environment-variables/environment-variables.go

@@ -1,6 +1,6 @@
-// [Environment variables](http://en.wikipedia.org/wiki/Environment_variable)
+// [Environment variables](https://en.wikipedia.org/wiki/Environment_variable)
 // are a universal mechanism for [conveying configuration
-// information to Unix programs](http://www.12factor.net/config).
+// information to Unix programs](https://www.12factor.net/config).
 // Let's look at how to set, get, and list environment variables.
 
 package main

examples/environment-variables/environment-variables.hash

@@ -1,2 +1,2 @@
-bee983e7820d64dec5331dc706c08f6135b5c632
-KuD8tDyB4lQ
+f480d3803659977183a4bc5c14da26c80b1d31fe
+2jmwXM264NC

examples/epoch/epoch.go

@@ -1,6 +1,6 @@
 // A common requirement in programs is getting the number
 // of seconds, milliseconds, or nanoseconds since the
-// [Unix epoch](http://en.wikipedia.org/wiki/Unix_time).
+// [Unix epoch](https://en.wikipedia.org/wiki/Unix_time).
 // Here's how to do it in Go.
 
 package main

examples/epoch/epoch.hash

@@ -1,2 +1,2 @@
-54e66c2e84334f2adbf87aaeb62065111c5644ea
-iG_EcjJp4ss
+a67ae165a1f00c205a344327d9d638f4eb931b5c
+lRmD1EWHHPz

examples/errors/errors.sh

@@ -6,5 +6,5 @@ f2 failed: 42 - can't work with it
 42
 can't work with it
 
-# See this [great post](http://blog.golang.org/2011/07/error-handling-and-go.html)
+# See this [great post](https://go.dev/blog/error-handling-and-go)
 # on the Go blog for more on error handling.

examples/execing-processes/execing-processes.go

@@ -5,7 +5,7 @@
 // completely replace the current Go process with another
 // (perhaps non-Go) one. To do this we'll use Go's
 // implementation of the classic
-// <a href="http://en.wikipedia.org/wiki/Exec_(operating_system)"><code>exec</code></a>
+// <a href="https://en.wikipedia.org/wiki/Exec_(operating_system)"><code>exec</code></a>
 // function.
 
 package main

examples/execing-processes/execing-processes.hash

@@ -1,2 +1,2 @@
-18867a0e743aaadb2aba0a0c7b1ca8098a1aa95c
-nI-HMuCI2lG
+568ae983493addff02d2ce8df57f41daf537f077
+s9qg7olf1dM

examples/http-clients/http-clients.go

@@ -17,7 +17,7 @@ func main() {
 	// object and calling its `Get` method; it uses the
 	// `http.DefaultClient` object which has useful default
 	// settings.
-	resp, err := http.Get("http://gobyexample.com")
+	resp, err := http.Get("https://gobyexample.com")
 	if err != nil {
 		panic(err)
 	}

examples/http-clients/http-clients.hash

@@ -1,2 +1,2 @@
-fbc80f8cfcd34e9daa3c52c23f6720f6ef7019dc
-kHCcVLoz7nd
+1497e193431e4740f593039f613773daaf97772e
+vFW_el7oHMk

examples/if-else/if-else.sh

@@ -3,6 +3,6 @@ $ go run if-else.go
 8 is divisible by 4
 9 has 1 digit
 
-# There is no [ternary if](http://en.wikipedia.org/wiki/%3F:)
+# There is no [ternary if](https://en.wikipedia.org/wiki/%3F:)
 # in Go, so you'll need to use a full `if` statement even
 # for basic conditions.

examples/interfaces/interfaces.sh

@@ -7,4 +7,4 @@ $ go run interfaces.go
 31.41592653589793
 
 # To learn more about Go's interfaces, check out this
-# [great blog post](http://jordanorelli.tumblr.com/post/32665860244/how-to-use-interfaces-in-go).
+# [great blog post](https://jordanorelli.tumblr.com/post/32665860244/how-to-use-interfaces-in-go).

examples/json/json.sh

@@ -16,6 +16,6 @@ apple
 
 
 # We've covered the basic of JSON in Go here, but check
-# out the [JSON and Go](http://blog.golang.org/2011/01/json-and-go.html)
-# blog post and [JSON package docs](http://golang.org/pkg/encoding/json/)
+# out the [JSON and Go](https://go.dev/blog/json)
+# blog post and [JSON package docs](https://pkg.go.dev/encoding/json)
 # for more.

examples/maps/maps.go

@@ -1,4 +1,4 @@
-// _Maps_ are Go's built-in [associative data type](http://en.wikipedia.org/wiki/Associative_array)
+// _Maps_ are Go's built-in [associative data type](https://en.wikipedia.org/wiki/Associative_array)
 // (sometimes called _hashes_ or _dicts_ in other languages).
 
 package main

examples/maps/maps.hash

@@ -1,2 +1,2 @@
-9e0e4535c99668b460c7175f8ff2edc2ccf58bec
-agK2Ro2i-Lu
+22d147fe9402f9ff210f12b9810811c07f4d64ca
+ulCzODwCde_0

examples/mutexes/mutexes.go

@@ -1,6 +1,6 @@
 // In the previous example we saw how to manage simple
 // counter state using [atomic operations](atomic-counters).
-// For more complex state we can use a [_mutex_](http://en.wikipedia.org/wiki/Mutual_exclusion)
+// For more complex state we can use a [_mutex_](https://en.wikipedia.org/wiki/Mutual_exclusion)
 // to safely access data across multiple goroutines.
 
 package main

examples/mutexes/mutexes.hash

@@ -1,2 +1,2 @@
-3688453f408d8c7cc6db91ab7fd5e0ac06ade7ea
-tDqeib2-yZA
+a437476f37f1f797e1bab491b3f2ac9b386f6700
+Kr_cdza5vyz

examples/pointers/pointers.go

@@ -1,4 +1,4 @@
-// Go supports <em><a href="http://en.wikipedia.org/wiki/Pointer_(computer_programming)">pointers</a></em>,
+// Go supports <em><a href="https://en.wikipedia.org/wiki/Pointer_(computer_programming)">pointers</a></em>,
 // allowing you to pass references to values and records
 // within your program.
 

examples/pointers/pointers.hash

@@ -1,2 +1,2 @@
-c727916063ddc3e99199cd24bfbde37ff301c0b4
-oimmXypnAcs
+7f9855cfb983efc07415117e2be734f55a6bb64b
+OlWCLpxAyBz

examples/random-numbers/random-numbers.go

@@ -1,5 +1,5 @@
 // Go's `math/rand` package provides
-// [pseudorandom number](http://en.wikipedia.org/wiki/Pseudorandom_number_generator)
+// [pseudorandom number](https://en.wikipedia.org/wiki/Pseudorandom_number_generator)
 // generation.
 
 package main

examples/random-numbers/random-numbers.hash

@@ -1,2 +1,2 @@
-102041ca421268afbd4b4e7687386bb65a8c7965
-PGklfJzErTN
+f0f88939692a32975d902c94066537a6ba5ab96f
+RaoKyUd9tgC

examples/random-numbers/random-numbers.sh

@@ -7,6 +7,6 @@ $ go run random-numbers.go
 5,87
 
 
-# See the [`math/rand`](http://golang.org/pkg/math/rand/)
+# See the [`math/rand`](https://pkg.go.dev/math/rand)
 # package docs for references on other random quantities
 # that Go can provide.

examples/rate-limiting/rate-limiting.go

@@ -1,4 +1,4 @@
-// [_Rate limiting_](http://en.wikipedia.org/wiki/Rate_limiting)
+// [_Rate limiting_](https://en.wikipedia.org/wiki/Rate_limiting)
 // is an important mechanism for controlling resource
 // utilization and maintaining quality of service. Go
 // elegantly supports rate limiting with goroutines,

examples/rate-limiting/rate-limiting.hash

@@ -1,2 +1,2 @@
-c7063265708287744ea172ed9ed1390043140718
-GXjXHfnKFXg
+4f327f5bd5ac199ae5590652563ea6ca4ce7eff5
+lqf7pC2FUeT

examples/recursion/recursion.go

@@ -1,5 +1,5 @@
 // Go supports
-// <a href="http://en.wikipedia.org/wiki/Recursion_(computer_science)"><em>recursive functions</em></a>.
+// <a href="https://en.wikipedia.org/wiki/Recursion_(computer_science)"><em>recursive functions</em></a>.
 // Here's a classic example.
 
 package main

examples/recursion/recursion.hash

@@ -1,2 +1,2 @@
-9ac9b5af828c33eb20dd322fd1a991334242c4b3
-7hD-3-bIuSp
+cdbd1a6957b3e2d7d9baa9efe4581ba4f8f3e753
+MBTKk9VpAiK

examples/regular-expressions/regular-expressions.go

@@ -1,4 +1,4 @@
-// Go offers built-in support for [regular expressions](http://en.wikipedia.org/wiki/Regular_expression).
+// Go offers built-in support for [regular expressions](https://en.wikipedia.org/wiki/Regular_expression).
 // Here are some examples of  common regexp-related tasks
 // in Go.
 

examples/regular-expressions/regular-expressions.hash

@@ -1,2 +1,2 @@
-5c3bcf9f8c61fc074143f766c4517e445a6d9b0f
-htCqJrLdh9Q
+7fd60a9497546cb5c84242276ed79aecbde7e950
+fI2YIfYsCaL

examples/regular-expressions/regular-expressions.sh

@@ -14,4 +14,4 @@ a <fruit>
 a PEACH
 
 # For a complete reference on Go regular expressions check
-# the [`regexp`](http://golang.org/pkg/regexp/) package docs.
+# the [`regexp`](https://pkg.go.dev/regexp) package docs.

examples/signals/signals.go

@@ -1,5 +1,5 @@
 // Sometimes we'd like our Go programs to intelligently
-// handle [Unix signals](http://en.wikipedia.org/wiki/Unix_signal).
+// handle [Unix signals](https://en.wikipedia.org/wiki/Unix_signal).
 // For example, we might want a server to gracefully
 // shutdown when it receives a `SIGTERM`, or a command-line
 // tool to stop processing input if it receives a `SIGINT`.

examples/signals/signals.hash

@@ -1,2 +1,2 @@
-cd15508731199185f3205692af0f80cbdee4fcd7
-LauPuRo3v9l
+739d6c0e33656817de5701412fe266c51730b532
+RKLAbvblJMQ

examples/slices/slices.sh

@@ -13,7 +13,7 @@ sl3: [c d e f]
 dcl: [g h i]
 2d:  [[0] [1 2] [2 3 4]]
 
-# Check out this [great blog post](http://blog.golang.org/2011/01/go-slices-usage-and-internals.html)
+# Check out this [great blog post](https://go.dev/blog/slices-intro)
 # by the Go team for more details on the design and
 # implementation of slices in Go.
 

examples/string-functions/string-functions.go

@@ -20,7 +20,7 @@ func main() {
 	// package, not methods on the string object itself,
 	// we need pass the string in question as the first
 	// argument to the function. You can find more
-	// functions in the [`strings`](http://golang.org/pkg/strings/)
+	// functions in the [`strings`](https://pkg.go.dev/strings)
 	// package docs.
 	p("Contains:  ", s.Contains("test", "es"))
 	p("Count:     ", s.Count("test", "t"))

examples/string-functions/string-functions.hash

@@ -1,2 +1,2 @@
-e52d4023b8102ba47f3f97e67e47da1bfe393e6c
-mdta6dlNB6e
+a8fc7e03fd17f6d432adf2f0e991461630ce4350
+DSKkoyx9Rcy

examples/variadic-functions/variadic-functions.go

@@ -1,4 +1,4 @@
-// [_Variadic functions_](http://en.wikipedia.org/wiki/Variadic_function)
+// [_Variadic functions_](https://en.wikipedia.org/wiki/Variadic_function)
 // can be called with any number of trailing arguments.
 // For example, `fmt.Println` is a common variadic
 // function.

examples/variadic-functions/variadic-functions.hash

@@ -1,2 +1,2 @@
-560aaef6ce8867710f3ef609b1bb2317377a71bf
-Ua6kZOMabBp
+dd2e819d49c1110c7eb7dc198b62e0994e0ba93e
+7_-i75JEsmM

public/arrays

@@ -42,7 +42,7 @@ specific length.</p>
             
           </td>
           <td class="code leading">
-            <a href="http://play.golang.org/p/TaahifSGSwU"><img title="Run code" src="play.png" class="run" /></a><img title="Copy code" src="clipboard.png" class="copy" />
+            <a href="https://go.dev/play/p/TaahifSGSwU"><img title="Run code" src="play.png" class="run" /></a><img title="Copy code" src="clipboard.png" class="copy" />
           <pre class="chroma"><span class="kn">package</span> <span class="nx">main</span>
 </pre>
           </td>

public/atomic-counters

@@ -46,7 +46,7 @@ counters</em> accessed by multiple goroutines.</p>
             
           </td>
           <td class="code leading">
-            <a href="http://play.golang.org/p/j-14agntvEO"><img title="Run code" src="play.png" class="run" /></a><img title="Copy code" src="clipboard.png" class="copy" />
+            <a href="https://go.dev/play/p/j-14agntvEO"><img title="Run code" src="play.png" class="run" /></a><img title="Copy code" src="clipboard.png" class="copy" />
           <pre class="chroma"><span class="kn">package</span> <span class="nx">main</span>
 </pre>
           </td>

public/base64-encoding

@@ -27,7 +27,7 @@
         
         <tr>
           <td class="docs">
-            <p>Go provides built-in support for <a href="http://en.wikipedia.org/wiki/Base64">base64
+            <p>Go provides built-in support for <a href="https://en.wikipedia.org/wiki/Base64">base64
 encoding/decoding</a>.</p>
 
           </td>
@@ -42,7 +42,7 @@ encoding/decoding</a>.</p>
             
           </td>
           <td class="code leading">
-            <a href="http://play.golang.org/p/S7ff3UgzNlG"><img title="Run code" src="play.png" class="run" /></a><img title="Copy code" src="clipboard.png" class="copy" />
+            <a href="https://go.dev/play/p/yztzkirFEvv"><img title="Run code" src="play.png" class="run" /></a><img title="Copy code" src="clipboard.png" class="copy" />
           <pre class="chroma"><span class="kn">package</span> <span class="nx">main</span>
 </pre>
           </td>

public/channel-buffering

@@ -46,7 +46,7 @@ those values.</p>
             
           </td>
           <td class="code leading">
-            <a href="http://play.golang.org/p/3BRCdRnRszb"><img title="Run code" src="play.png" class="run" /></a><img title="Copy code" src="clipboard.png" class="copy" />
+            <a href="https://go.dev/play/p/3BRCdRnRszb"><img title="Run code" src="play.png" class="run" /></a><img title="Copy code" src="clipboard.png" class="copy" />
           <pre class="chroma"><span class="kn">package</span> <span class="nx">main</span>
 </pre>
           </td>

public/channel-directions

@@ -44,7 +44,7 @@ the program.</p>
             
           </td>
           <td class="code leading">
-            <a href="http://play.golang.org/p/mjNJDHwUH4R"><img title="Run code" src="play.png" class="run" /></a><img title="Copy code" src="clipboard.png" class="copy" />
+            <a href="https://go.dev/play/p/mjNJDHwUH4R"><img title="Run code" src="play.png" class="run" /></a><img title="Copy code" src="clipboard.png" class="copy" />
           <pre class="chroma"><span class="kn">package</span> <span class="nx">main</span>
 </pre>
           </td>

public/channel-synchronization

@@ -45,7 +45,7 @@ you may prefer to use a <a href="waitgroups">WaitGroup</a>.</p>
             
           </td>
           <td class="code leading">
-            <a href="http://play.golang.org/p/Nw-1DzIGk5f"><img title="Run code" src="play.png" class="run" /></a><img title="Copy code" src="clipboard.png" class="copy" />
+            <a href="https://go.dev/play/p/Nw-1DzIGk5f"><img title="Run code" src="play.png" class="run" /></a><img title="Copy code" src="clipboard.png" class="copy" />
           <pre class="chroma"><span class="kn">package</span> <span class="nx">main</span>
 </pre>
           </td>

public/channels

@@ -44,7 +44,7 @@ goroutine.</p>
             
           </td>
           <td class="code leading">
-            <a href="http://play.golang.org/p/MaLY7AiAkHM"><img title="Run code" src="play.png" class="run" /></a><img title="Copy code" src="clipboard.png" class="copy" />
+            <a href="https://go.dev/play/p/MaLY7AiAkHM"><img title="Run code" src="play.png" class="run" /></a><img title="Copy code" src="clipboard.png" class="copy" />
           <pre class="chroma"><span class="kn">package</span> <span class="nx">main</span>
 </pre>
           </td>

public/closing-channels

@@ -43,7 +43,7 @@ completion to the channel&rsquo;s receivers.</p>
             
           </td>
           <td class="code leading">
-            <a href="http://play.golang.org/p/vCvRjcMq7p3"><img title="Run code" src="play.png" class="run" /></a><img title="Copy code" src="clipboard.png" class="copy" />
+            <a href="https://go.dev/play/p/vCvRjcMq7p3"><img title="Run code" src="play.png" class="run" /></a><img title="Copy code" src="clipboard.png" class="copy" />
           <pre class="chroma"><span class="kn">package</span> <span class="nx">main</span>
 </pre>
           </td>

public/closures

@@ -27,8 +27,8 @@
         
         <tr>
           <td class="docs">
-            <p>Go supports <a href="http://en.wikipedia.org/wiki/Anonymous_function"><em>anonymous functions</em></a>,
-which can form <a href="http://en.wikipedia.org/wiki/Closure_(computer_science)"><em>closures</em></a>.
+            <p>Go supports <a href="https://en.wikipedia.org/wiki/Anonymous_function"><em>anonymous functions</em></a>,
+which can form <a href="https://en.wikipedia.org/wiki/Closure_(computer_science)"><em>closures</em></a>.
 Anonymous functions are useful when you want to define
 a function inline without having to name it.</p>
 
@@ -44,7 +44,7 @@ a function inline without having to name it.</p>
             
           </td>
           <td class="code leading">
-            <a href="http://play.golang.org/p/66Lgw9iIIch"><img title="Run code" src="play.png" class="run" /></a><img title="Copy code" src="clipboard.png" class="copy" />
+            <a href="https://go.dev/play/p/NpgpzS8ZG8y"><img title="Run code" src="play.png" class="run" /></a><img title="Copy code" src="clipboard.png" class="copy" />
           <pre class="chroma"><span class="kn">package</span> <span class="nx">main</span>
 </pre>
           </td>

public/command-line-arguments

@@ -27,7 +27,7 @@
         
         <tr>
           <td class="docs">
-            <p><a href="http://en.wikipedia.org/wiki/Command-line_interface#Arguments"><em>Command-line arguments</em></a>
+            <p><a href="https://en.wikipedia.org/wiki/Command-line_interface#Arguments"><em>Command-line arguments</em></a>
 are a common way to parameterize execution of programs.
 For example, <code>go run hello.go</code> uses <code>run</code> and
 <code>hello.go</code> arguments to the <code>go</code> program.</p>
@@ -44,7 +44,7 @@ For example, <code>go run hello.go</code> uses <code>run</code> and
             
           </td>
           <td class="code leading">
-            <a href="http://play.golang.org/p/oSxtj7v_v1K"><img title="Run code" src="play.png" class="run" /></a><img title="Copy code" src="clipboard.png" class="copy" />
+            <a href="https://go.dev/play/p/UYCEvh9d2Zb"><img title="Run code" src="play.png" class="run" /></a><img title="Copy code" src="clipboard.png" class="copy" />
           <pre class="chroma"><span class="kn">package</span> <span class="nx">main</span>
 </pre>
           </td>

public/command-line-flags

@@ -27,7 +27,7 @@
         
         <tr>
           <td class="docs">
-            <p><a href="http://en.wikipedia.org/wiki/Command-line_interface#Command-line_option"><em>Command-line flags</em></a>
+            <p><a href="https://en.wikipedia.org/wiki/Command-line_interface#Command-line_option"><em>Command-line flags</em></a>
 are a common way to specify options for command-line
 programs. For example, in <code>wc -l</code> the <code>-l</code> is a
 command-line flag.</p>
@@ -44,7 +44,7 @@ command-line flag.</p>
             
           </td>
           <td class="code leading">
-            <a href="http://play.golang.org/p/-zzqphwtdJq"><img title="Run code" src="play.png" class="run" /></a><img title="Copy code" src="clipboard.png" class="copy" />
+            <a href="https://go.dev/play/p/IUPZlYSigc3"><img title="Run code" src="play.png" class="run" /></a><img title="Copy code" src="clipboard.png" class="copy" />
           <pre class="chroma"><span class="kn">package</span> <span class="nx">main</span>
 </pre>
           </td>

public/command-line-subcommands

@@ -46,7 +46,7 @@ subcommands that have their own flags.</p>
             
           </td>
           <td class="code leading">
-            <a href="http://play.golang.org/p/DkvdHKK-XCv"><img title="Run code" src="play.png" class="run" /></a><img title="Copy code" src="clipboard.png" class="copy" />
+            <a href="https://go.dev/play/p/DkvdHKK-XCv"><img title="Run code" src="play.png" class="run" /></a><img title="Copy code" src="clipboard.png" class="copy" />
           <pre class="chroma"><span class="kn">package</span> <span class="nx">main</span>
 </pre>
           </td>

public/constants

@@ -42,7 +42,7 @@ and numeric values.</p>
             
           </td>
           <td class="code leading">
-            <a href="http://play.golang.org/p/Vw-pXSfo9_b"><img title="Run code" src="play.png" class="run" /></a><img title="Copy code" src="clipboard.png" class="copy" />
+            <a href="https://go.dev/play/p/Vw-pXSfo9_b"><img title="Run code" src="play.png" class="run" /></a><img title="Copy code" src="clipboard.png" class="copy" />
           <pre class="chroma"><span class="kn">package</span> <span class="nx">main</span>
 </pre>
           </td>

public/context

@@ -36,7 +36,7 @@ across API boundaries and goroutines.</p>
 
           </td>
           <td class="code leading">
-            <a href="http://play.golang.org/p/0_bu1o8rIBO"><img title="Run code" src="play.png" class="run" /></a><img title="Copy code" src="clipboard.png" class="copy" />
+            <a href="https://go.dev/play/p/0_bu1o8rIBO"><img title="Run code" src="play.png" class="run" /></a><img title="Copy code" src="clipboard.png" class="copy" />
           <pre class="chroma">
 <span class="kn">package</span> <span class="nx">main</span>
 </pre>

public/defer

@@ -44,7 +44,7 @@ purposes of cleanup. <code>defer</code> is often used where e.g.
             
           </td>
           <td class="code leading">
-            <a href="http://play.golang.org/p/5SDVfc_jxbg"><img title="Run code" src="play.png" class="run" /></a><img title="Copy code" src="clipboard.png" class="copy" />
+            <a href="https://go.dev/play/p/5SDVfc_jxbg"><img title="Run code" src="play.png" class="run" /></a><img title="Copy code" src="clipboard.png" class="copy" />
           <pre class="chroma"><span class="kn">package</span> <span class="nx">main</span>
 </pre>
           </td>

public/directories

@@ -42,7 +42,7 @@
             
           </td>
           <td class="code leading">
-            <a href="http://play.golang.org/p/cICbVSX51zI"><img title="Run code" src="play.png" class="run" /></a><img title="Copy code" src="clipboard.png" class="copy" />
+            <a href="https://go.dev/play/p/cICbVSX51zI"><img title="Run code" src="play.png" class="run" /></a><img title="Copy code" src="clipboard.png" class="copy" />
           <pre class="chroma"><span class="kn">package</span> <span class="nx">main</span>
 </pre>
           </td>

public/embed-directive

@@ -35,7 +35,7 @@ build time. Read more about the embed directive
 
           </td>
           <td class="code leading">
-            <a href="http://play.golang.org/p/p6JB_5z1IBJ"><img title="Run code" src="play.png" class="run" /></a><img title="Copy code" src="clipboard.png" class="copy" />
+            <a href="https://go.dev/play/p/p6JB_5z1IBJ"><img title="Run code" src="play.png" class="run" /></a><img title="Copy code" src="clipboard.png" class="copy" />
           <pre class="chroma">
 <span class="kn">package</span> <span class="nx">main</span>
 </pre>

public/environment-variables

@@ -27,8 +27,8 @@
         
         <tr>
           <td class="docs">
-            <p><a href="http://en.wikipedia.org/wiki/Environment_variable">Environment variables</a>
-are a universal mechanism for <a href="http://www.12factor.net/config">conveying configuration
+            <p><a href="https://en.wikipedia.org/wiki/Environment_variable">Environment variables</a>
+are a universal mechanism for <a href="https://www.12factor.net/config">conveying configuration
 information to Unix programs</a>.
 Let&rsquo;s look at how to set, get, and list environment variables.</p>
 
@@ -44,7 +44,7 @@ Let&rsquo;s look at how to set, get, and list environment variables.</p>
             
           </td>
           <td class="code leading">
-            <a href="http://play.golang.org/p/KuD8tDyB4lQ"><img title="Run code" src="play.png" class="run" /></a><img title="Copy code" src="clipboard.png" class="copy" />
+            <a href="https://go.dev/play/p/2jmwXM264NC"><img title="Run code" src="play.png" class="run" /></a><img title="Copy code" src="clipboard.png" class="copy" />
           <pre class="chroma"><span class="kn">package</span> <span class="nx">main</span>
 </pre>
           </td>

public/epoch

@@ -29,7 +29,7 @@
           <td class="docs">
             <p>A common requirement in programs is getting the number
 of seconds, milliseconds, or nanoseconds since the
-<a href="http://en.wikipedia.org/wiki/Unix_time">Unix epoch</a>.
+<a href="https://en.wikipedia.org/wiki/Unix_time">Unix epoch</a>.
 Here&rsquo;s how to do it in Go.</p>
 
           </td>
@@ -44,7 +44,7 @@ Here&rsquo;s how to do it in Go.</p>
             
           </td>
           <td class="code leading">
-            <a href="http://play.golang.org/p/iG_EcjJp4ss"><img title="Run code" src="play.png" class="run" /></a><img title="Copy code" src="clipboard.png" class="copy" />
+            <a href="https://go.dev/play/p/lRmD1EWHHPz"><img title="Run code" src="play.png" class="run" /></a><img title="Copy code" src="clipboard.png" class="copy" />
           <pre class="chroma"><span class="kn">package</span> <span class="nx">main</span>
 </pre>
           </td>

public/errors

@@ -48,7 +48,7 @@ non-error tasks.</p>
             
           </td>
           <td class="code leading">
-            <a href="http://play.golang.org/p/NiJOpCPO3L0"><img title="Run code" src="play.png" class="run" /></a><img title="Copy code" src="clipboard.png" class="copy" />
+            <a href="https://go.dev/play/p/NiJOpCPO3L0"><img title="Run code" src="play.png" class="run" /></a><img title="Copy code" src="clipboard.png" class="copy" />
           <pre class="chroma"><span class="kn">package</span> <span class="nx">main</span>
 </pre>
           </td>
@@ -268,7 +268,7 @@ assertion.</p>
         
         <tr>
           <td class="docs">
-            <p>See this <a href="http://blog.golang.org/2011/07/error-handling-and-go.html">great post</a>
+            <p>See this <a href="https://go.dev/blog/error-handling-and-go">great post</a>
 on the Go blog for more on error handling.</p>
 
           </td>

public/execing-processes

@@ -34,7 +34,7 @@ a running Go process. Sometimes we just want to
 completely replace the current Go process with another
 (perhaps non-Go) one. To do this we’ll use Go’s
 implementation of the classic
-<a href="http://en.wikipedia.org/wiki/Exec_(operating_system)"><code>exec</code></a>
+<a href="https://en.wikipedia.org/wiki/Exec_(operating_system)"><code>exec</code></a>
 function.</p>
 
           </td>
@@ -49,7 +49,7 @@ function.</p>
             
           </td>
           <td class="code leading">
-            <a href="http://play.golang.org/p/nI-HMuCI2lG"><img title="Run code" src="play.png" class="run" /></a><img title="Copy code" src="clipboard.png" class="copy" />
+            <a href="https://go.dev/play/p/s9qg7olf1dM"><img title="Run code" src="play.png" class="run" /></a><img title="Copy code" src="clipboard.png" class="copy" />
           <pre class="chroma"><span class="kn">package</span> <span class="nx">main</span>
 </pre>
           </td>

public/exit

@@ -38,7 +38,7 @@ status.</p>
             
           </td>
           <td class="code leading">
-            <a href="http://play.golang.org/p/b9aYzlENkb__R"><img title="Run code" src="play.png" class="run" /></a><img title="Copy code" src="clipboard.png" class="copy" />
+            <a href="https://go.dev/play/p/b9aYzlENkb__R"><img title="Run code" src="play.png" class="run" /></a><img title="Copy code" src="clipboard.png" class="copy" />
           <pre class="chroma"><span class="kn">package</span> <span class="nx">main</span>
 </pre>
           </td>

public/file-paths

@@ -34,7 +34,7 @@ between operating systems; <code>dir/file</code> on Linux vs.
 
           </td>
           <td class="code leading">
-            <a href="http://play.golang.org/p/5h3lUytvmyO"><img title="Run code" src="play.png" class="run" /></a><img title="Copy code" src="clipboard.png" class="copy" />
+            <a href="https://go.dev/play/p/5h3lUytvmyO"><img title="Run code" src="play.png" class="run" /></a><img title="Copy code" src="clipboard.png" class="copy" />
           <pre class="chroma">
 <span class="kn">package</span> <span class="nx">main</span>
 </pre>

public/for

@@ -42,7 +42,7 @@ some basic types of <code>for</code> loops.</p>
             
           </td>
           <td class="code leading">
-            <a href="http://play.golang.org/p/2-4H-ArwHHS"><img title="Run code" src="play.png" class="run" /></a><img title="Copy code" src="clipboard.png" class="copy" />
+            <a href="https://go.dev/play/p/2-4H-ArwHHS"><img title="Run code" src="play.png" class="run" /></a><img title="Copy code" src="clipboard.png" class="copy" />
           <pre class="chroma"><span class="kn">package</span> <span class="nx">main</span>
 </pre>
           </td>

public/functions

@@ -42,7 +42,7 @@ functions with a few different examples.</p>
             
           </td>
           <td class="code leading">
-            <a href="http://play.golang.org/p/-o49-dQfGbK"><img title="Run code" src="play.png" class="run" /></a><img title="Copy code" src="clipboard.png" class="copy" />
+            <a href="https://go.dev/play/p/-o49-dQfGbK"><img title="Run code" src="play.png" class="run" /></a><img title="Copy code" src="clipboard.png" class="copy" />
           <pre class="chroma"><span class="kn">package</span> <span class="nx">main</span>
 </pre>
           </td>

public/generics

@@ -42,7 +42,7 @@
             
           </td>
           <td class="code leading">
-            <a href="http://play.golang.org/p/YulcAofh266"><img title="Run code" src="play.png" class="run" /></a><img title="Copy code" src="clipboard.png" class="copy" />
+            <a href="https://go.dev/play/p/YulcAofh266"><img title="Run code" src="play.png" class="run" /></a><img title="Copy code" src="clipboard.png" class="copy" />
           <pre class="chroma"><span class="kn">package</span> <span class="nx">main</span>
 </pre>
           </td>

public/goroutines

@@ -41,7 +41,7 @@
             
           </td>
           <td class="code leading">
-            <a href="http://play.golang.org/p/I7scqRijEJt"><img title="Run code" src="play.png" class="run" /></a><img title="Copy code" src="clipboard.png" class="copy" />
+            <a href="https://go.dev/play/p/I7scqRijEJt"><img title="Run code" src="play.png" class="run" /></a><img title="Copy code" src="clipboard.png" class="copy" />
           <pre class="chroma"><span class="kn">package</span> <span class="nx">main</span>
 </pre>
           </td>

public/hello-world

@@ -28,7 +28,7 @@ message. Here&rsquo;s the full source code.</p>
 
           </td>
           <td class="code leading">
-            <a href="http://play.golang.org/p/NeviD0awXjt"><img title="Run code" src="play.png" class="run" /></a><img title="Copy code" src="clipboard.png" class="copy" />
+            <a href="https://go.dev/play/p/NeviD0awXjt"><img title="Run code" src="play.png" class="run" /></a><img title="Copy code" src="clipboard.png" class="copy" />
           <pre class="chroma">
 <span class="kn">package</span> <span class="nx">main</span>
 </pre>

public/http-clients

@@ -34,7 +34,7 @@ HTTP requests.</p>
 
           </td>
           <td class="code leading">
-            <a href="http://play.golang.org/p/kHCcVLoz7nd"><img title="Run code" src="play.png" class="run" /></a><img title="Copy code" src="clipboard.png" class="copy" />
+            <a href="https://go.dev/play/p/vFW_el7oHMk"><img title="Run code" src="play.png" class="run" /></a><img title="Copy code" src="clipboard.png" class="copy" />
           <pre class="chroma">
 <span class="kn">package</span> <span class="nx">main</span>
 </pre>
@@ -79,7 +79,7 @@ settings.</p>
           <td class="code leading">
             
           <pre class="chroma">
-    <span class="nx">resp</span><span class="p">,</span> <span class="nx">err</span> <span class="o">:=</span> <span class="nx">http</span><span class="p">.</span><span class="nf">Get</span><span class="p">(</span><span class="s">&#34;http://gobyexample.com&#34;</span><span class="p">)</span>
+    <span class="nx">resp</span><span class="p">,</span> <span class="nx">err</span> <span class="o">:=</span> <span class="nx">http</span><span class="p">.</span><span class="nf">Get</span><span class="p">(</span><span class="s">&#34;https://gobyexample.com&#34;</span><span class="p">)</span>
     <span class="k">if</span> <span class="nx">err</span> <span class="o">!=</span> <span class="kc">nil</span> <span class="p">{</span>
         <span class="nb">panic</span><span class="p">(</span><span class="nx">err</span><span class="p">)</span>
     <span class="p">}</span>
@@ -166,7 +166,7 @@ settings.</p>
     </div>
     <script>
       var codeLines = [];
-      codeLines.push('package main\u000A');codeLines.push('import (\u000A    \"bufio\"\u000A    \"fmt\"\u000A    \"net/http\"\u000A)\u000A');codeLines.push('func main() {\u000A');codeLines.push('    resp, err :\u003D http.Get(\"http://gobyexample.com\")\u000A    if err !\u003D nil {\u000A        panic(err)\u000A    }\u000A    defer resp.Body.Close()\u000A');codeLines.push('    fmt.Println(\"Response status:\", resp.Status)\u000A');codeLines.push('    scanner :\u003D bufio.NewScanner(resp.Body)\u000A    for i :\u003D 0; scanner.Scan() \u0026\u0026 i \u003C 5; i++ {\u000A        fmt.Println(scanner.Text())\u000A    }\u000A');codeLines.push('    if err :\u003D scanner.Err(); err !\u003D nil {\u000A        panic(err)\u000A    }\u000A}\u000A');codeLines.push('');
+      codeLines.push('package main\u000A');codeLines.push('import (\u000A    \"bufio\"\u000A    \"fmt\"\u000A    \"net/http\"\u000A)\u000A');codeLines.push('func main() {\u000A');codeLines.push('    resp, err :\u003D http.Get(\"https://gobyexample.com\")\u000A    if err !\u003D nil {\u000A        panic(err)\u000A    }\u000A    defer resp.Body.Close()\u000A');codeLines.push('    fmt.Println(\"Response status:\", resp.Status)\u000A');codeLines.push('    scanner :\u003D bufio.NewScanner(resp.Body)\u000A    for i :\u003D 0; scanner.Scan() \u0026\u0026 i \u003C 5; i++ {\u000A        fmt.Println(scanner.Text())\u000A    }\u000A');codeLines.push('    if err :\u003D scanner.Err(); err !\u003D nil {\u000A        panic(err)\u000A    }\u000A}\u000A');codeLines.push('');
     </script>
     <script src="site.js" async></script>
   </body>

public/http-servers

@@ -32,7 +32,7 @@
 
           </td>
           <td class="code leading">
-            <a href="http://play.golang.org/p/s3xMMt9Ytry"><img title="Run code" src="play.png" class="run" /></a><img title="Copy code" src="clipboard.png" class="copy" />
+            <a href="https://go.dev/play/p/s3xMMt9Ytry"><img title="Run code" src="play.png" class="run" /></a><img title="Copy code" src="clipboard.png" class="copy" />
           <pre class="chroma">
 <span class="kn">package</span> <span class="nx">main</span>
 </pre>

public/if-else

@@ -42,7 +42,7 @@ straight-forward.</p>
             
           </td>
           <td class="code leading">
-            <a href="http://play.golang.org/p/QlMkcwHvmns"><img title="Run code" src="play.png" class="run" /></a><img title="Copy code" src="clipboard.png" class="copy" />
+            <a href="https://go.dev/play/p/QlMkcwHvmns"><img title="Run code" src="play.png" class="run" /></a><img title="Copy code" src="clipboard.png" class="copy" />
           <pre class="chroma"><span class="kn">package</span> <span class="nx">main</span>
 </pre>
           </td>
@@ -155,7 +155,7 @@ in Go, but that the braces are required.</p>
         
         <tr>
           <td class="docs">
-            <p>There is no <a href="http://en.wikipedia.org/wiki/%3F:">ternary if</a>
+            <p>There is no <a href="https://en.wikipedia.org/wiki/%3F:">ternary if</a>
 in Go, so you&rsquo;ll need to use a full <code>if</code> statement even
 for basic conditions.</p>
 

public/index.html

@@ -9,7 +9,7 @@
     <div id="intro">
       <h2><a href="./">Go by Example</a></h2>
       <p>
-        <a href="http://go.dev">Go</a> is an
+        <a href="https://go.dev">Go</a> is an
         open source programming language designed for
         building simple, fast, and reliable software.
         Please read the official

public/interfaces

@@ -42,7 +42,7 @@ signatures.</p>
             
           </td>
           <td class="code leading">
-            <a href="http://play.golang.org/p/XJASG4MxBQr"><img title="Run code" src="play.png" class="run" /></a><img title="Copy code" src="clipboard.png" class="copy" />
+            <a href="https://go.dev/play/p/XJASG4MxBQr"><img title="Run code" src="play.png" class="run" /></a><img title="Copy code" src="clipboard.png" class="copy" />
           <pre class="chroma"><span class="kn">package</span> <span class="nx">main</span>
 </pre>
           </td>
@@ -209,7 +209,7 @@ these structs as arguments to <code>measure</code>.</p>
         <tr>
           <td class="docs">
             <p>To learn more about Go&rsquo;s interfaces, check out this
-<a href="http://jordanorelli.tumblr.com/post/32665860244/how-to-use-interfaces-in-go">great blog post</a>.</p>
+<a href="https://jordanorelli.tumblr.com/post/32665860244/how-to-use-interfaces-in-go">great blog post</a>.</p>
 
           </td>
           <td class="code empty">

public/json

@@ -43,7 +43,7 @@ data types.</p>
             
           </td>
           <td class="code leading">
-            <a href="http://play.golang.org/p/JOQpRGJWAxR"><img title="Run code" src="play.png" class="run" /></a><img title="Copy code" src="clipboard.png" class="copy" />
+            <a href="https://go.dev/play/p/JOQpRGJWAxR"><img title="Run code" src="play.png" class="run" /></a><img title="Copy code" src="clipboard.png" class="copy" />
           <pre class="chroma"><span class="kn">package</span> <span class="nx">main</span>
 </pre>
           </td>
@@ -383,8 +383,8 @@ stream JSON encodings directly to <code>os.Writer</code>s like
         <tr>
           <td class="docs">
             <p>We&rsquo;ve covered the basic of JSON in Go here, but check
-out the <a href="http://blog.golang.org/2011/01/json-and-go.html">JSON and Go</a>
-blog post and <a href="http://golang.org/pkg/encoding/json/">JSON package docs</a>
+out the <a href="https://go.dev/blog/json">JSON and Go</a>
+blog post and <a href="https://pkg.go.dev/encoding/json">JSON package docs</a>
 for more.</p>
 
           </td>

public/line-filters

@@ -47,7 +47,7 @@ pattern to write your own Go line filters.</p>
 
           </td>
           <td class="code leading">
-            <a href="http://play.golang.org/p/kNcupWRsYPP"><img title="Run code" src="play.png" class="run" /></a><img title="Copy code" src="clipboard.png" class="copy" />
+            <a href="https://go.dev/play/p/kNcupWRsYPP"><img title="Run code" src="play.png" class="run" /></a><img title="Copy code" src="clipboard.png" class="copy" />
           <pre class="chroma">
 <span class="kn">package</span> <span class="nx">main</span>
 </pre>

public/maps

@@ -27,7 +27,7 @@
         
         <tr>
           <td class="docs">
-            <p><em>Maps</em> are Go&rsquo;s built-in <a href="http://en.wikipedia.org/wiki/Associative_array">associative data type</a>
+            <p><em>Maps</em> are Go&rsquo;s built-in <a href="https://en.wikipedia.org/wiki/Associative_array">associative data type</a>
 (sometimes called <em>hashes</em> or <em>dicts</em> in other languages).</p>
 
           </td>
@@ -42,7 +42,7 @@
             
           </td>
           <td class="code leading">
-            <a href="http://play.golang.org/p/agK2Ro2i-Lu"><img title="Run code" src="play.png" class="run" /></a><img title="Copy code" src="clipboard.png" class="copy" />
+            <a href="https://go.dev/play/p/ulCzODwCde_0"><img title="Run code" src="play.png" class="run" /></a><img title="Copy code" src="clipboard.png" class="copy" />
           <pre class="chroma"><span class="kn">package</span> <span class="nx">main</span>
 </pre>
           </td>

public/methods

@@ -41,7 +41,7 @@
             
           </td>
           <td class="code leading">
-            <a href="http://play.golang.org/p/4wmDCAydC1e"><img title="Run code" src="play.png" class="run" /></a><img title="Copy code" src="clipboard.png" class="copy" />
+            <a href="https://go.dev/play/p/4wmDCAydC1e"><img title="Run code" src="play.png" class="run" /></a><img title="Copy code" src="clipboard.png" class="copy" />
           <pre class="chroma"><span class="kn">package</span> <span class="nx">main</span>
 </pre>
           </td>

public/multiple-return-values

@@ -43,7 +43,7 @@ to return both result and error values from a function.</p>
             
           </td>
           <td class="code leading">
-            <a href="http://play.golang.org/p/vZdUvLB1WbK"><img title="Run code" src="play.png" class="run" /></a><img title="Copy code" src="clipboard.png" class="copy" />
+            <a href="https://go.dev/play/p/vZdUvLB1WbK"><img title="Run code" src="play.png" class="run" /></a><img title="Copy code" src="clipboard.png" class="copy" />
           <pre class="chroma"><span class="kn">package</span> <span class="nx">main</span>
 </pre>
           </td>

public/mutexes

@@ -29,7 +29,7 @@
           <td class="docs">
             <p>In the previous example we saw how to manage simple
 counter state using <a href="atomic-counters">atomic operations</a>.
-For more complex state we can use a <a href="http://en.wikipedia.org/wiki/Mutual_exclusion"><em>mutex</em></a>
+For more complex state we can use a <a href="https://en.wikipedia.org/wiki/Mutual_exclusion"><em>mutex</em></a>
 to safely access data across multiple goroutines.</p>
 
           </td>
@@ -44,7 +44,7 @@ to safely access data across multiple goroutines.</p>
             
           </td>
           <td class="code leading">
-            <a href="http://play.golang.org/p/tDqeib2-yZA"><img title="Run code" src="play.png" class="run" /></a><img title="Copy code" src="clipboard.png" class="copy" />
+            <a href="https://go.dev/play/p/Kr_cdza5vyz"><img title="Run code" src="play.png" class="run" /></a><img title="Copy code" src="clipboard.png" class="copy" />
           <pre class="chroma"><span class="kn">package</span> <span class="nx">main</span>
 </pre>
           </td>

public/non-blocking-channel-operations

@@ -44,7 +44,7 @@ non-blocking multi-way <code>select</code>s.</p>
             
           </td>
           <td class="code leading">
-            <a href="http://play.golang.org/p/TFv6-7OVNVq"><img title="Run code" src="play.png" class="run" /></a><img title="Copy code" src="clipboard.png" class="copy" />
+            <a href="https://go.dev/play/p/TFv6-7OVNVq"><img title="Run code" src="play.png" class="run" /></a><img title="Copy code" src="clipboard.png" class="copy" />
           <pre class="chroma"><span class="kn">package</span> <span class="nx">main</span>
 </pre>
           </td>

public/number-parsing

@@ -42,7 +42,7 @@ in many programs; here&rsquo;s how to do it in Go.</p>
             
           </td>
           <td class="code leading">
-            <a href="http://play.golang.org/p/ZAMEid6Fpmu"><img title="Run code" src="play.png" class="run" /></a><img title="Copy code" src="clipboard.png" class="copy" />
+            <a href="https://go.dev/play/p/ZAMEid6Fpmu"><img title="Run code" src="play.png" class="run" /></a><img title="Copy code" src="clipboard.png" class="copy" />
           <pre class="chroma"><span class="kn">package</span> <span class="nx">main</span>
 </pre>
           </td>

public/panic

@@ -44,7 +44,7 @@ aren&rsquo;t prepared to handle gracefully.</p>
             
           </td>
           <td class="code leading">
-            <a href="http://play.golang.org/p/9-2vCvRuhmE"><img title="Run code" src="play.png" class="run" /></a><img title="Copy code" src="clipboard.png" class="copy" />
+            <a href="https://go.dev/play/p/9-2vCvRuhmE"><img title="Run code" src="play.png" class="run" /></a><img title="Copy code" src="clipboard.png" class="copy" />
           <pre class="chroma"><span class="kn">package</span> <span class="nx">main</span>
 </pre>
           </td>

public/pointers

@@ -27,7 +27,7 @@
         
         <tr>
           <td class="docs">
-            <p>Go supports <em><a href="http://en.wikipedia.org/wiki/Pointer_(computer_programming)">pointers</a></em>,
+            <p>Go supports <em><a href="https://en.wikipedia.org/wiki/Pointer_(computer_programming)">pointers</a></em>,
 allowing you to pass references to values and records
 within your program.</p>
 
@@ -43,7 +43,7 @@ within your program.</p>
             
           </td>
           <td class="code leading">
-            <a href="http://play.golang.org/p/oimmXypnAcs"><img title="Run code" src="play.png" class="run" /></a><img title="Copy code" src="clipboard.png" class="copy" />
+            <a href="https://go.dev/play/p/OlWCLpxAyBz"><img title="Run code" src="play.png" class="run" /></a><img title="Copy code" src="clipboard.png" class="copy" />
           <pre class="chroma"><span class="kn">package</span> <span class="nx">main</span>
 </pre>
           </td>

public/random-numbers

@@ -28,7 +28,7 @@
         <tr>
           <td class="docs">
             <p>Go&rsquo;s <code>math/rand</code> package provides
-<a href="http://en.wikipedia.org/wiki/Pseudorandom_number_generator">pseudorandom number</a>
+<a href="https://en.wikipedia.org/wiki/Pseudorandom_number_generator">pseudorandom number</a>
 generation.</p>
 
           </td>
@@ -43,7 +43,7 @@ generation.</p>
             
           </td>
           <td class="code leading">
-            <a href="http://play.golang.org/p/PGklfJzErTN"><img title="Run code" src="play.png" class="run" /></a><img title="Copy code" src="clipboard.png" class="copy" />
+            <a href="https://go.dev/play/p/RaoKyUd9tgC"><img title="Run code" src="play.png" class="run" /></a><img title="Copy code" src="clipboard.png" class="copy" />
           <pre class="chroma"><span class="kn">package</span> <span class="nx">main</span>
 </pre>
           </td>
@@ -200,7 +200,7 @@ produces the same sequence of random numbers.</p>
         
         <tr>
           <td class="docs">
-            <p>See the <a href="http://golang.org/pkg/math/rand/"><code>math/rand</code></a>
+            <p>See the <a href="https://pkg.go.dev/math/rand"><code>math/rand</code></a>
 package docs for references on other random quantities
 that Go can provide.</p>
 

public/range

@@ -43,7 +43,7 @@ of the data structures we&rsquo;ve already learned.</p>
             
           </td>
           <td class="code leading">
-            <a href="http://play.golang.org/p/kRsyWNmLFLz"><img title="Run code" src="play.png" class="run" /></a><img title="Copy code" src="clipboard.png" class="copy" />
+            <a href="https://go.dev/play/p/kRsyWNmLFLz"><img title="Run code" src="play.png" class="run" /></a><img title="Copy code" src="clipboard.png" class="copy" />
           <pre class="chroma"><span class="kn">package</span> <span class="nx">main</span>
 </pre>
           </td>

public/range-over-channels

@@ -44,7 +44,7 @@ values received from a channel.</p>
             
           </td>
           <td class="code leading">
-            <a href="http://play.golang.org/p/yQMclmwOYs9"><img title="Run code" src="play.png" class="run" /></a><img title="Copy code" src="clipboard.png" class="copy" />
+            <a href="https://go.dev/play/p/yQMclmwOYs9"><img title="Run code" src="play.png" class="run" /></a><img title="Copy code" src="clipboard.png" class="copy" />
           <pre class="chroma"><span class="kn">package</span> <span class="nx">main</span>
 </pre>
           </td>

public/rate-limiting

@@ -27,7 +27,7 @@
         
         <tr>
           <td class="docs">
-            <p><a href="http://en.wikipedia.org/wiki/Rate_limiting"><em>Rate limiting</em></a>
+            <p><a href="https://en.wikipedia.org/wiki/Rate_limiting"><em>Rate limiting</em></a>
 is an important mechanism for controlling resource
 utilization and maintaining quality of service. Go
 elegantly supports rate limiting with goroutines,
@@ -45,7 +45,7 @@ channels, and <a href="tickers">tickers</a>.</p>
             
           </td>
           <td class="code leading">
-            <a href="http://play.golang.org/p/GXjXHfnKFXg"><img title="Run code" src="play.png" class="run" /></a><img title="Copy code" src="clipboard.png" class="copy" />
+            <a href="https://go.dev/play/p/lqf7pC2FUeT"><img title="Run code" src="play.png" class="run" /></a><img title="Copy code" src="clipboard.png" class="copy" />
           <pre class="chroma"><span class="kn">package</span> <span class="nx">main</span>
 </pre>
           </td>

public/reading-files

@@ -43,7 +43,7 @@ reading files.</p>
             
           </td>
           <td class="code leading">
-            <a href="http://play.golang.org/p/DF2Wo8nDKaF"><img title="Run code" src="play.png" class="run" /></a><img title="Copy code" src="clipboard.png" class="copy" />
+            <a href="https://go.dev/play/p/DF2Wo8nDKaF"><img title="Run code" src="play.png" class="run" /></a><img title="Copy code" src="clipboard.png" class="copy" />
           <pre class="chroma"><span class="kn">package</span> <span class="nx">main</span>
 </pre>
           </td>

public/recover

@@ -60,7 +60,7 @@ does by default for HTTP servers.</p>
             
           </td>
           <td class="code leading">
-            <a href="http://play.golang.org/p/Sk-SVdofEIZ"><img title="Run code" src="play.png" class="run" /></a><img title="Copy code" src="clipboard.png" class="copy" />
+            <a href="https://go.dev/play/p/Sk-SVdofEIZ"><img title="Run code" src="play.png" class="run" /></a><img title="Copy code" src="clipboard.png" class="copy" />
           <pre class="chroma"><span class="kn">package</span> <span class="nx">main</span>
 </pre>
           </td>

public/recursion

@@ -28,7 +28,7 @@
         <tr>
           <td class="docs">
             <p>Go supports
-<a href="http://en.wikipedia.org/wiki/Recursion_(computer_science)"><em>recursive functions</em></a>.
+<a href="https://en.wikipedia.org/wiki/Recursion_(computer_science)"><em>recursive functions</em></a>.
 Here&rsquo;s a classic example.</p>
 
           </td>
@@ -43,7 +43,7 @@ Here&rsquo;s a classic example.</p>
             
           </td>
           <td class="code leading">
-            <a href="http://play.golang.org/p/7hD-3-bIuSp"><img title="Run code" src="play.png" class="run" /></a><img title="Copy code" src="clipboard.png" class="copy" />
+            <a href="https://go.dev/play/p/MBTKk9VpAiK"><img title="Run code" src="play.png" class="run" /></a><img title="Copy code" src="clipboard.png" class="copy" />
           <pre class="chroma"><span class="kn">package</span> <span class="nx">main</span>
 </pre>
           </td>

public/regular-expressions

@@ -27,7 +27,7 @@
         
         <tr>
           <td class="docs">
-            <p>Go offers built-in support for <a href="http://en.wikipedia.org/wiki/Regular_expression">regular expressions</a>.
+            <p>Go offers built-in support for <a href="https://en.wikipedia.org/wiki/Regular_expression">regular expressions</a>.
 Here are some examples of  common regexp-related tasks
 in Go.</p>
 
@@ -43,7 +43,7 @@ in Go.</p>
             
           </td>
           <td class="code leading">
-            <a href="http://play.golang.org/p/htCqJrLdh9Q"><img title="Run code" src="play.png" class="run" /></a><img title="Copy code" src="clipboard.png" class="copy" />
+            <a href="https://go.dev/play/p/fI2YIfYsCaL"><img title="Run code" src="play.png" class="run" /></a><img title="Copy code" src="clipboard.png" class="copy" />
           <pre class="chroma"><span class="kn">package</span> <span class="nx">main</span>
 </pre>
           </td>
@@ -316,7 +316,7 @@ text with a given function.</p>
         <tr>
           <td class="docs">
             <p>For a complete reference on Go regular expressions check
-the <a href="http://golang.org/pkg/regexp/"><code>regexp</code></a> package docs.</p>
+the <a href="https://pkg.go.dev/regexp"><code>regexp</code></a> package docs.</p>
 
           </td>
           <td class="code empty">

public/select

@@ -43,7 +43,7 @@ select is a powerful feature of Go.</p>
             
           </td>
           <td class="code leading">
-            <a href="http://play.golang.org/p/FzONhs4-tae"><img title="Run code" src="play.png" class="run" /></a><img title="Copy code" src="clipboard.png" class="copy" />
+            <a href="https://go.dev/play/p/FzONhs4-tae"><img title="Run code" src="play.png" class="run" /></a><img title="Copy code" src="clipboard.png" class="copy" />
           <pre class="chroma"><span class="kn">package</span> <span class="nx">main</span>
 </pre>
           </td>

public/sha256-hashes

@@ -45,7 +45,7 @@ SHA256 hashes in Go.</p>
             
           </td>
           <td class="code leading">
-            <a href="http://play.golang.org/p/IHM1lZVm_Jm"><img title="Run code" src="play.png" class="run" /></a><img title="Copy code" src="clipboard.png" class="copy" />
+            <a href="https://go.dev/play/p/IHM1lZVm_Jm"><img title="Run code" src="play.png" class="run" /></a><img title="Copy code" src="clipboard.png" class="copy" />
           <pre class="chroma"><span class="kn">package</span> <span class="nx">main</span>
 </pre>
           </td>

public/signals

@@ -28,7 +28,7 @@
         <tr>
           <td class="docs">
             <p>Sometimes we&rsquo;d like our Go programs to intelligently
-handle <a href="http://en.wikipedia.org/wiki/Unix_signal">Unix signals</a>.
+handle <a href="https://en.wikipedia.org/wiki/Unix_signal">Unix signals</a>.
 For example, we might want a server to gracefully
 shutdown when it receives a <code>SIGTERM</code>, or a command-line
 tool to stop processing input if it receives a <code>SIGINT</code>.
@@ -46,7 +46,7 @@ Here&rsquo;s how to handle signals in Go with channels.</p>
             
           </td>
           <td class="code leading">
-            <a href="http://play.golang.org/p/LauPuRo3v9l"><img title="Run code" src="play.png" class="run" /></a><img title="Copy code" src="clipboard.png" class="copy" />
+            <a href="https://go.dev/play/p/RKLAbvblJMQ"><img title="Run code" src="play.png" class="run" /></a><img title="Copy code" src="clipboard.png" class="copy" />
           <pre class="chroma"><span class="kn">package</span> <span class="nx">main</span>
 </pre>
           </td>

public/site.css

@@ -1,4 +1,4 @@
-/* CSS reset: http://meyerweb.com/eric/tools/css/reset/ */
+/* CSS reset: https://meyerweb.com/eric/tools/css/reset/ */
 html, body, div, span, applet, object, iframe,
 h1, h2, h3, h4, h5, h6, p, blockquote, pre,
 a, abbr, acronym, address, big, cite, code,