在Lua中仅提交一次 [英] Do file only once in Lua

问题描述

我想知道是否有办法只做一次lua文件，而以后再尝试做一次lua文件都将导致无操作.

I was wondering if there's a way to do a lua file only once and have any subsequent attempts to do that lua file will result in a no-op.

我已经考虑过要做一些类似于C ++标头的#if/else/endif技巧.我想知道是否有一种标准的方法来实现这一点.

I've already thought about doing something akin to C++ header's #if/else/endif trick. I'm wondering if there's a standard way to implement this.

詹姆斯

推荐答案

好吧，require确实做到了.

require "file" -- runs "file.lua"
require "file" -- does not run the "file" again

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