arrays - 如何通过 & :key as an argument to map instead of a block with ruby?

Question

我写了这段代码:

my.objects.map { |object| object.key }

我的 rubocop 说:

Pass &:key as an argument to map instead of a block.

有没有捷径可以做同样的事情？

Answer 1

Pass &:key as an argument to map instead of a block

意思是:

my.objects.map(&:key)