从头开始编程语言

Question

In python you can use the following syntax as a shortcut:

a[-1]    # last item in the array
a[-2:]   # last two items in the array
a[:-2]   # everything except the last two items

Does Go have shortcuts similar to the second and third example when creating new slices?

Answer 1

Nope, you have to use len(a).

a[len(a)-1]
a[len(a)-2:]
a[:len(a)-2]