ruby irb 提示模式有什么区别? [英] What's the difference between the ruby irb prompt modes?

问题描述

我可以用

irb --prompt prompt-mode

我可以看到 null 和 simple 的作用，但我无法区分 null 和 xmp 和 default/classic/inf-ruby 的区别.有人可以向我解释这些其他模式的作用吗?让多个模式做同样的事情似乎毫无意义.

I can see what null and simple does, but I can't tell the difference between null and xmp and the difference between default/classic/inf-ruby. Can someone explain to me what these other modes do? It seems pointless to have multiple modes doing the same thing.

推荐答案

这些问题的答案在 IRB.conf[:PROMPT] 中，它是一个哈希，其键是不同的提示，其值是每个提示的配置.阅读本文以了解提示的配置.

The answer to those questions lie in IRB.conf[:PROMPT] which is a hash whose keys are the different prompts and whose values are the configurations for each prompt. Read this to a understand a prompt's configuration.

null 和 xmp 的区别在于 xmp 显示的结果用箭头缩进:

The difference between null and xmp is that xmp displays a result indented with an arrow:

$ irb --prompt xmp -f
2**10
    ==>1024

而 null 不缩进或显示箭头:

while null doesn't indent or display the arrow:

$ irb --prompt null -f
2**10
1024

一旦您阅读了上面的链接并了解提示具有不同的模式和不同的配置，您应该能够回答第二个问题.

You should be able to answer your second question once you read the above link and understand that prompts have different modes and different configurations for them.

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