Ruby中chr()的反义词是什么? [英] What's the opposite of chr() in Ruby?

问题描述

在许多语言中，有一对函数chr()和ord()，可在数字和字符值之间转换.在某些语言中，ord()被称为asc().

In many languages there's a pair of functions, chr() and ord(), which convert between numbers and character values. In some languages, ord() is called asc().

Ruby的Integer#chr效果很好:

Ruby has Integer#chr, which works great:

>> 65.chr
A

足够公平.但是你怎么走呢?

Fair enough. But how do you go the other way?

"A".each_byte do |byte|
   puts byte
end

打印:

65

这与我想要的非常接近.但我确实希望避免循环-我在声明const时正在寻找足够短的内容以使其易于阅读.

and that's pretty close to what I want. But I'd really rather avoid a loop -- I'm looking for something short enough to be readable when declaring a const.

推荐答案

如果String#ord在1.9中不存在，则在2.0中存在:

If String#ord didn't exist in 1.9, it does in 2.0:

"A".ord #=> 65

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