切片内的阵列

Question

is it possible to put a array within a slice? I tried [][2]int, but I can't figure out how to create an instance. The end result should be a mutable slice around an immutable 2 item array.

In python it would look like: [(1,2),(3,4)].

Answer 1

Go syntax uses {} braces for slices and arrays.

s := [][2]int{
    [2]int{1, 2},
    [2]int{3, 4},
}

But you can elide the inner types in the literal when they can be inferred:

s := [][2]int{{1, 2}, {3, 4}}
s = append(s, [2]int{5, 6})