如何将Ruby方法变成一个块? [英] How to turn a Ruby method into a block?

问题描述

有没有一种方法可以简化以下代码?

Is there a way to simplify the following code?

filenames是文件名(字符串)的列表，例如["foo.txt"，"bar.c"，"baz.yaml"]

filenames is a list of filenames (strings), e.g. ["foo.txt", "bar.c", "baz.yaml"]

filenames.map { |f| File.size(f) }

有没有办法将"File.size"转换为proc或块?对于现有对象上的方法，我可以执行&:method.模块级方法有什么类似的东西吗?

Is there any way to turn "File.size" into a proc or block? For methods on existing objects, I can do &:method. Is there something analogous for module level methods?

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