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add example for ranging through keys

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Jim Walker 2016-03-07 15:45:32 -05:00 committed by Mark McGranaghan
parent 513eefcddc
commit 394e8aa27e
1 changed files with 5 additions and 0 deletions
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5
examples/range/range.go
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@ -34,6 +34,11 @@ func main() {
fmt.Printf("%s -> %s\n", k, v) fmt.Printf("%s -> %s\n", k, v)
} }
// `range` can also iterate over just the keys of a map.
for k := range kvs {
fmt.Println("key:", k)
}
// `range` on strings iterates over Unicode code // `range` on strings iterates over Unicode code
// points. The first value is the starting byte index // points. The first value is the starting byte index
// of the `rune` and the second the `rune` itself. // of the `rune` and the second the `rune` itself.