publish if/else

examples.txt

@@ -4,7 +4,7 @@ Hello World
 # Short Declarations
 # Constants
 # For
-# If/Else
+If/Else
 # Switch
 Arrays
 Slices

examples/if-else/if-else.go

@@ -1,23 +1,35 @@
-// If/else in Go is straight-forward.
+// Branching with `if` and `else` in Go is
+// straight-forward.
 
 package main
 
 import "fmt"
 
 func main() {
-    // If/else is straight-forward. Note that there are no
+
-    // enclosing parentheses around the condition.
+    // Here's a basic example.
-    // Also, there is no ternary operator (`?`) in Go.
-    fmt.Print("7 is ")
     if 7%2 == 0 {
-        fmt.Println("even")
+        fmt.Println("7 is even")
-    } else if 7%2 == 1 {
-        fmt.Println("odd")
     } else {
-        fmt.Println("???")
+        fmt.Println("7 is odd")
+    }
+
+    // You can have an `if` statement without an else.
+    if 8%4 == 0 {
+        fmt.Println("8 is divisible by 4")
+    }
+
+    // A statement can proceed conditionals; any variables
+    // declared in this statement are available in all
+    // branches.
+    if num := 9; num < 0 {
+        fmt.Println(num, "is negative")
+    } else if num < 10 {
+        fmt.Println(num, "has 1 digit")
+    } else {
+        fmt.Println(num, "has multiple digits")
     }
 }
 
-// There is no ternary operator (i.e. `?`) in Go, so
+// Note that you don't need parenthesis around conditions
-// you'll need to use a full if/else even for very basic
+// in Go, but that the brackets are required.
-// conditions.

examples/if-else/if-else.sh

@@ -1,2 +1,8 @@
 $ go run if-else.go 
 7 is odd
+8 is divisible by 4
+9 has 1 digit
+
+# There is no [ternary if](http://en.wikipedia.org/wiki/%3F:)
+# in Go, so you'll need to use a full if statement even
+# for basic conditions.