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How to read lines and put them in an array? — Gideros Forum
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    How to read lines and put them in an array?

    DarkPixelDarkPixel Member
    edited September 2012 in General questions
    Hey guys! Well I am trying to make a simple application, not a game. The application has a strings.txt file, in which each line as a URL.
    I want to put each line in an array, and then download that link and view it as a bitmap.
    This is my code for reading them an putting them in an array.
    local i = 1
lines = {}
        for line in io.lines('strings.txt') do 
                   lines[i] = line
		   print(lines[i] ..  ' ' ..i)
		   i = i +1
 
        end
    My issue is that the URL's are read with an additional blank line. So I can't download them. Only the last line is getting downloaded, cause it doesn't have an additional line.
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    Comments

    • talistalis Guru
      edited September 2012 Accepted Answer
      From your code i can not see anything wrong but you can remove the spaces programmatically before writing it to array i guess with lua string object.
      (What i mean is before writing the string value to array you are reading it to variable called line in your code)

      Maybe something like this:
      function trim(s)
  return (string:gsub("^%s*(.-)%s*$", "%1"))
end
      By the way there are so many functions more follow here to experiment them.
      http://lua-users.org/wiki/CommonFunctions
      or
      http://lua-users.org/wiki/StringLibraryTutorial
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    • DarkPixelDarkPixel Member
      edited September 2012
      Hey mate, thanks for your response. I tried your code but unfortunately it shows this error: "main.lua:26: calling 'gsub' on bad self (string expected, got table)"
      but I am sure that I pass a string to the function.

      I will checkout your links now to see if I can find anything. Thanks again. :)

      EDIT: It worked actually. I forgot to replace string in the trim function with s :D
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    • talistalis Guru
      gz job don't hesitate to ask any questions, when you have:D
      +1 -1Share on Facebook
    • DarkPixelDarkPixel Member
      Will do! Thanks again! :D
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