Last active
May 27, 2022 14:32
-
-
Save sudo-give-me-coffee/3e1234b55b418e741a92bcb24ce51038 to your computer and use it in GitHub Desktop.
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| string_builder = {} | |
| string_builder.__index = string_builder | |
| function string_builder.new() | |
| local self = setmetatable({}, string_builder) | |
| self.__data = {} | |
| self.__count = 0 | |
| self.__lenght = 0 | |
| return self | |
| end | |
| function string_builder.append(self, str) | |
| if type(self) == "string" then | |
| local o = string_builder:new():append(self) | |
| return o | |
| end | |
| self.__data["_"..(self.__count+1)] = tostring(str) | |
| self.__count = self.__count+1 | |
| self.__lenght = self.__lenght+1 | |
| return self | |
| end | |
| function string_builder.remove(self,idx) | |
| if self.__data["_"..tonumber(idx)] == nil then return end | |
| self.__data["_"..tonumber(idx)] = nil | |
| if self.__lenght > 0 then | |
| self.__lenght = self.__lenght-1 | |
| end | |
| return self | |
| end | |
| function string_builder.value(self,idx) | |
| return self.__data["_"..tonumber(idx)] | |
| end | |
| function string_builder.__tostring(self) | |
| local s = "" | |
| local i = 1 | |
| while i<self.__count+1 do | |
| if not (self.__data["_"..i] == nil) then | |
| s = s..self.__data["_"..i] | |
| end | |
| i=i+1 | |
| end | |
| return s | |
| end | |
| function string_builder.__type(self) | |
| return "string_builder" | |
| end | |
| function string_builder.__len(self) | |
| return self.__lenght | |
| end | |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment