使用 string.gsub 最有效地将 x 更改为 y (Lua)
尽管我对 Lua 中的 gsub 越来越熟悉，但我在这里很茫然。可能有一种更好的方法可以更有效地做到这一点，这就是我正在寻找的。我想做的是改变：
\(port Planes)9e;\(enter pool)n2euw
变成
port Planes;run 9e;enter pool;run n2euw
这似乎是一件简单的事情，但我完全一片空白。我或许可以将其部分归因于精疲力尽，但这并不是一个真正的借口。我的方式是：
string.gsub(variable, ";","\(")
string.gsub(variable, "\(", ";")
string.gsub(variable, ")",";run")
string.gsub(variable, ";;",";")
但对我来说，这看起来相当草率，而且没有我希望的那么有效。如果“)”结束该行，并且它会放置“;”，它也会带来问题。在那里，这不是我想要的。我希望能有更熟悉 Lua 的人提供专业知识来整理这个问题并提高效率。一旦一切都说完并完成后，我将把它放入一个函数中。谢谢！
编辑：经过测试，它甚至不起作用，无论如何......而且我无法找出正确的模式匹配序列来使其起作用......
I'm at a loss here, though I've been getting more and more familiar with gsub in Lua. There probably is a better way to do this more efficiently, and that's what I'm looking for. What I'm wishing to do is change:
\(port Planes)9e;\(enter pool)n2euw
into
port Planes;run 9e;enter pool;run n2euw
It seems like it would be a simple thing, but I'm totally drawing a blank. I could probably attribute that partly to being exhausted, but that's not really an excuse. The way I would have it is:
string.gsub(variable, ";","\(")
string.gsub(variable, "\(", ";")
string.gsub(variable, ")",";run")
string.gsub(variable, ";;",";")
But to me, that looks pretty sloppy, and not as efficient as I would like it to me. It also poses the problem if ")" ends the line, and it'd put ";" there, which is not something I want. I would appreciate the expertise of someone more familiar with Lua who can tidy this up and make it more efficient. I'll be putting it into a function once all is said and done. Thanks!
Edit: Upon testing that, it doesn't even work, anyway... and I can't figure out the proper pattern matching sequence to use to make it work at all...
如果你对这篇内容有疑问，欢迎到本站社区发帖提问 参与讨论，获取更多帮助，或者扫码二维码加入 Web 技术交流群。
绑定邮箱获取回复消息
由于您还没有绑定你的真实邮箱，如果其他用户或者作者回复了您的评论，将不能在第一时间通知您！
发布评论
评论（1）
在不了解更多可能的组合的情况下，我不能说这在每个实例中都有效，但它应该开始：
第一个 gsub 返回括号内的命令，删除括号并添加 ';run '在最后。
第二个是检查字符串的结尾是否为“;run”，如果是则替换它。
您还应该查看这篇文章，了解关于模式的精彩总结：
http://www.lua.org/pil/20.2.html
Without knowing more about the possible combinations you could have, I can't say that this would work in every instance but it should give a start:
The first gsub is returning the commands inside your parenthesis, removing the parenthesis and adding ';run ' at the end.
The second one is checking whether the end of the string is ';run ' and replacing it if that's the case.
You should also check out this article for a nice summary on patterns:
http://www.lua.org/pil/20.2.html