Revision Difference
string#511972
The string `type` is a sequence of characters.⤶
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The string `library` is a standard Lua library which provides functions for the manipulation of strings.[https://www.lua.org/pil/20.html]⤶
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In Garry's Mod there are several extra useful functions and features added to this library.<br/>⤶
Most notably all strings will access this library through the string metatable index function.[https://github.com/Facepunch/garrysmod/blob/master/garrysmod/lua/includes/extensions/string.lua#L288-L299]⤶
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This means all strings are treated like table objects and the string library as its <page text="Meta Table">Meta_Tables</page>⤶
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```⤶
local x = "Kittens"⤶
function string.Foobar(self) return self:Right(4) end⤶
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string.Right(x,4) == x:Right(4) == x:Foobar() == ("Kittens"):Right(4) == x[-4]..x[-3]..x[-2]..x[-1]⤶
```⤶
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The string `metatable` however is something else, and to access that you must use getmetatable(""). ⤶
<br/>The difference here is related to <page>Metamethods</page>, such as using (+) instead of (..) to concatenate strings.⤶
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```⤶
print("Kittens" + " And " + "Puppies")⤶
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function getmetatable("").__add(str,x) return str..x end // This will work⤶
function string.__add(str,x) return str..x end // But this will not.⤶
```⤶
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See <page>Meta Tables</page> and <page>Metamethods</page> for more information.⤶
<warning>Making changes to the string `metatable` is not a good idea unless you know what you are doing. Use the string `library` instead.</warning>⤶
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This category lists functions available in the string `library`.