Does the Go language have built-in support for arrays?

Yes, the Go language has built-in support for arrays. An array in Go is a fixed-size sequence of elements of the same type. The size of the array is specified at declaration and cannot be changed.

Example of declaring an array in Go:

var arr [3]int // array of 3 integers
arr[0] = 10
arr[1] = 20
arr[2] = 30

However, in Go, slices are more commonly used. They are more flexible and dynamic wrappers over arrays.