62 lines
978 B
Markdown
62 lines
978 B
Markdown
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---
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title: Range
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---
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## Range
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To iterate over a collection in Go, we can use the range.
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Range differs from for-loops as the item in a collection is not accessed by an index.
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If you want to access a specifc element in a collection, a for-loop is probably the better options.
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Here is an example:
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```go
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package main
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import "fmt"
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func main() {
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fruits := []string{"apple", "orange", "pear"}
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for _, fruit := range fruits {
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fmt.Println(fruit)
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}
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}
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```
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Will output:
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````
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apple
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orange
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pear
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````
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You might have noticed the blank identifer that was used.
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The blank identifer (or the first variable returned from range) is the index of the item.
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This is best suited when ranging over a map, so you can get the key and value:
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```go
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package main
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import "fmt"
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func main() {
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kvs := map[string]string{"a": "apple", "b": "banana"}
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for k, v := range kvs {
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fmt.Printf("%s -> %s\n", k, v)
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}
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}
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```go
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Outputs:
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````
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a -> apple
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b -> banana
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````
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