首字符大写Lua [英] First character uppercase Lua

问题描述

Lua是否提供了使单词中的第一个字符变为大写的功能(如php中的ucfirst)?如果是，该如何使用?

Does Lua provide a function to make the first character in a word uppercase (like ucfirst in php) and if so, how to use it?

我希望keywords[1]是首字母大写.我已经读过string.upper做到了，但是整个单词变成了大写.

I want keywords[1] to be first letter uppercase. I've read that string.upper does it but it made the whole word uppercase.

推荐答案

此处，包括这个.要将字符串中的第一个字符更改为大写，可以使用:

There are some useful string recipes here, including this one. To change the first character in a string to uppercase, you can use:

function firstToUpper(str)
    return (str:gsub("^%l", string.upper))
end

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