diff options
| -rw-r--r-- | go.html.markdown | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/go.html.markdown b/go.html.markdown index a1be08af..02ea280d 100644 --- a/go.html.markdown +++ b/go.html.markdown @@ -177,6 +177,14 @@ func learnFlowControl() { break // Just kidding. continue // Unreached. } + + // You can use range to iterate over an array, a slice, a string, a map, or a channel. + // range returns one (channel) or two values (array, slice, string and map). + for key, value := range map[string]int{"one": 1, "two": 2, "three": 3} { + // for each pair in the map, print key and value + fmt.Printf("key=%s, value=%d\n", key, value) + } + // As with for, := in an if statement means to declare and assign // y first, then test y > x. if y := expensiveComputation(); y > x { |