Arrays are values in Go

An array has a fixed length in its type, and assigning one copies it.

func arrays() (int, int, bool) {
    original := [4]int{1, 2, 3, 4}
    copied := original
    copied[0] = 99

    grid := [2][3]int{{1, 2, 3}, {4, 5, 6}}
    inferred := [...]string{"a", "b", "c"}

    return original[0], grid[1][2], len(inferred) == 3
}

How it works

[3]int and [4]int are different types.
Assignment and passing copy the whole array.
That is why slices exist, and why arrays are rare.

Keywords and builtins used here

bool
func
int
len
return
string

The run, in numbers

Lines: 10
Characters to type: 231
Tokens: 96
Three-star pace: 90 tpm

At the three-star pace of 90 tokens a minute, this run takes about 64 seconds.

Type this snippet

Step 1 of 9 in Arrays, slices & maps, step 16 of 30 in Language basics.

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