如题
各位大侠，请问下面代码中两个values后面那个冒号的位置为什么一前一后啊？
slice切片，没用过python吗？
a := []int{1, 2, 3, 4}
a[2:] // same as a[2 : len(a)] ==> []int{3, 4}
a[:3] // same as a[0 : 3] ==> []int{1, 2, 3}
a[:] // same as a[0 : len(a)] ==> []int{1, 2, 3, 4}https://golang.org/ref/spec#Slice_expressions