tweaking

src/01-hello-world.go

@@ -6,7 +6,7 @@ func main() {
     fmt.Println("Hello world")  // It prints `Hello world`.
 }
 
-/*
+/*                              // Put this code in hello-world.go, then use
-$ go run 01-hello.go            // Use `go run` to run it.
+$ go run hello-world.go         // `go run` to run it.
 Hello world
 */

src/02-values.go

@@ -15,7 +15,7 @@ func main() {
 }
 
 /*
-$ go run 02-values.go
+$ go run values.go
 Hello world
 Hello other
 1+1 = 2

src/05-variables.go

@@ -3,8 +3,15 @@ package main
 import "fmt"
 
 func main() {
-    var x string = "Hello world"  // `var` declares 1 or more variables. The ype comes
+    var x string = "Hello world"  // `var` declares 1 or more variables. The type comes
     fmt.Println(x)                // at the end.
 
-    var a, b int = 1, 2           // An example of declaring multiple ints variables.
+    var a, b int = 1, 2           // An example of declaring multiple `int` variables.
+    fmt.Println(a, b)
 }
+
+/*
+$ go run variables.go
+Hello world
+1 2
+*/

src/10-for.go

@@ -4,16 +4,25 @@ import "fmt"
                                 
 func main() {                   
 	i := 1                      // We initialize `i` with `1` and loop until it's 10.
-	for i <= 10 {               
+	for i <= 3 {               
-		fmt.Println(i)          
+		fmt.Print(i)          
 		i = i + 1               
 	}                           
                                 
-	for j := 1; j <= 10; j++ {  // That type of loop is common. We can do it on one
+	for j := 1; j <= 3; j++ {  // That type of loop is common. We can do it on one
-		fmt.Println(j)          // line.
+		fmt.Print(j)          // line.
 	}
 
-    for {                       // `for` without a condition will loop until you`
+    for {                       // `for` without a condition will loop until you
-        return                  // return`.
+        fmt.Println()           // `return`.
+        return
     }
 }                               // We'll see other `for` forms latter.
+
+/*
+$ go run for.go
+123123
+*/
+
+// == todo
+// break out of for loop?

src/11-if-else.go

@@ -1,16 +1,17 @@
-                         // If/Else
-
 package main
 
+import "fmt"
+
 func main() {
-    if 7 % 2 == 0 {      // If/else is straightford. Note that there are no
+    fmt.Print("7 is ")
-        println("even")  // enclosing parenthesis around the condition.
+    if 7 % 2 == 0 {          // If/else is straightford. Note that there are no
-    } else {             // Also, there is no ternary operator (`?`) in Go.
+        fmt.Println("even")  // enclosing parenthesis around the condition.
-        println("odd")
+    } else {                 // Also, there is no ternary operator (`?`) in Go.
+        fmt.Println("odd")
     }
 }
 
 /*
 $ go run 11-if-else.go
-odd
+7 is odd
 */