lua中的准引用/引用? [英] quasiquote/quote in lua?

问题描述

在Lisp中，我可以拥有:

In Lisp, I can have:

(a b c d e f g)

这意味着

look up b, c, d, e, f, g
look up a; apply value of a to above

然后，我也可以拥有:

`(a b c d e f g)

这等同于

 (list 'a 'b 'c 'd 'e 'f 'g)

现在，在lua中，我可以拥有:

Now, in lua, I can have:

[snipplet 1]
foo = {
  Foo,
  {Cat, cat},
  {Dog, dog}
};

最有可能将其扩展为: {nil，{nil，nil}，{nil，nil}}

Which ends up most likely expanding into: { nil, { nil, nil}, {nil, nil}}

我真正想要的是这样的东西:

Whereas what I really want is something like:

[snipplet 2]
{ "Foo", {"Cat", "cat"}, {"Dog", "dog"}}

在lua中是否有类似反引号的方法?

Is there some backquote-like method in lua?

我发现[摘要1]比[摘要2]在视觉上更令人愉悦，但我的意思是摘要2.

I find [snipplet 1] to be more visually pleasing than [snipplet 2], but what I mean is snipplet 2.

谢谢！

推荐答案

没有语法，但是您可以尝试以下运行时解决方案:

There's no syntax for that but you can try this run-time solution:

setmetatable(_G,{__index=function (t,k) return k end})

这使所有未定义的变量的行为就像它们包含名称一样的字符串.

This makes all undefined variables behave as if they contained strings with their names.

这篇关于lua中的准引用/引用?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！