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 ...