CODEWITHSUNDEEP
luaspaceletter
Karto1695
Karto1695

Reputation: 21

Lua How do I add a space between small and capital letters

I have a function to put the first letter of a string into uppercase.

function firstToUpper(str)
   return string.gsub(" "..str, "%W%l", string.upper):sub(2)
end

Now I need a function to add a space between small and big letters in a string like:

HelloWorld ----> Hello World

Do you know any solution for Lua?

Upvotes: 2

Views: 1417

Answers (2)

Piglet
Piglet

Reputation: 28950

str:gsub("(%l)(%u)", "%1 %2") returns a string that comes with a space between any lower upper letter pair in str.

Please read https://www.lua.org/manual/5.4/manual.html#pdf-string.gsub

Upvotes: 4

luckysenpai
luckysenpai

Reputation: 1

local function spaceOut(str)
     local new = str
     repeat
         local start,finish = new:find("%l%u")
         new = new:gsub("%l%u",new:sub(start,start).." "..new:sub(finish,finish),1)
     until new:find("%l%u") == nil
     return new
 end

 print(spaceOut("ThisIsMyMethodForSpacingWordsOut"))

Upvotes: 0

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