LANGUAGE » LUA

String

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Reference:www.lua.org

lua

name = "Hime"
concatenate = "Hello " .. "World"

Functions

The g in some functions stands for global.

Function	Description
`format`	Format a string using the same rules as `sprintf`.
`sub`	Return a substring from `start` index to `end`. Negative values count from behind.
`gsub`	Perform replace using a regex pattern.
`match`	Return a match using a regex pattern.
`gmatch`	Return all matches using a regex pattern (`^` at the beginning doesn't work).
`len`	Return the length of the string.
`lower`	Return a copy of the string in lowercase.
`upper`	Return a copy of the string in uppercase.

Format a string:

lua

formatting = string.format("Hello %s!", name)

Remove last character:

lua

string.sub(my_str, 1, -2)

Remove the word password from a string:

lua

string.gsub(my_str, "password", "")