Exploring and Mastering the Full Go Featureset/

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Slices and Arrays

Slices and Arrays

Learn about slices and arrays in Go.

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In Go, slices and arrays serve a similar purpose. They are declared nearly the same way:

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package main
import "fmt"
func main() {
    slice := []int{1, 2, 3}
    array := [3]int{1, 2, 3}
    // let the compiler work out array length
    // this will be an equivalent of [3]int
    array2 := [...]int{1, 2, 3}
    fmt.Println(slice, array, array2)
}

Slices feel like arrays with useful functionality on top. They use pointers to arrays internally in their implementation. Slices however are so much more convenient that arrays are rarely used directly in Go.

Arrays

An array is a typed sequence of ...