您可以在 irb 会话中自动在每个命令上“要求"ruby 文件吗? [英] Can you 'require' ruby file in irb session, automatically, on every command?

问题描述

我目前正在编辑一个文件，我正在使用 irb 来测试 api:

I am currently editing a file, and I'm using irb to test the api:

> require './file.rb'
> o = Object.new
> o.method

然后我希望能够编辑 file.rb，并能够立即看到更改.示例:假设 new_method 在我第一次需要 file.rb 时不存在:

I then want to be able to edit the file.rb, and be able to see changes immediately. Example: assume new_method did not exist when I first required file.rb:

> o.new_method

这将返回一个错误.是否有沙箱/开发人员模式或方法，我可以在无需每次重新加载文件的情况下实现上述目标?无论如何，在第一个 require 之后 Require 将不起作用.我假设最坏的情况是我不得不使用负载.

Which will return an error. Is there a sandbox/developer mode or a method whereby I can achieve the above without having to reload the file every time? Require will not work after the first require, regardless. I assume worst case I'd have to use load instead.

推荐答案

我通常创建一个这样的简单函数:

I usually create a simple function like this:

def reload
    load 'myscript.rb'
    # Load any other necessary files here ...
end

这样，一个简单的reload 将重新导入我正在处理的所有脚本.这不是自动的，但这是我能想到的最接近的事情.

With that, a simple reload will re-import all of the scripts that I'm working on. It's not automatic, but it's the closest thing that I've been able to come up with.

当使用不存在的方法调用您的对象时，您可以覆盖 method_missing 以自动调用此函数.不过我自己从来没有尝试过，所以我不能给出任何具体的建议.如果您正在调用一个已经存在但只是被修改过的方法，这也无济于事.

You may be able to override method_missing to call this function automatically when your object is invoked with a method that doesn't exist. I've never tried it myself, though, so I can't give any specific advice. It also wouldn't help if you're calling a method that already exists but has simply been modified.

由于我自己的懒惰，我已经将鼠标上的一个可编程按钮映射到按键序列reload".当我使用 irb 时，只需动动小指即可重新加载所有内容.因此，当我不使用irb时，我最终会无意中将字符串reload"插入到文档中(但这完全是一个不同的问题).

In my own laziness, I've gone as far as mapping one of the programmable buttons on my mouse to the key sequence "reload<enter>". When I'm using irb, all it takes is the twitch of a pinky finger to reload everything. Consequently when I'm not using irb, I end up with the string "reload" inserted in documents unintentionally (but that's a different problem entirely).

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