lua - why the second was the first?

sslivka · April 2013

source:

function f1(...)
for i,v in pairs(arg[1]) do
print(i, v)
end
end

f1({["sound1"] = "sound1.mp3",
["sound2"] = "sound2.mp3",
["sound3"] = "sound3.mp3",})

result:

main.lua is uploading.
Uploading finished.
sound2 sound2.mp3
sound1 sound1.mp3
sound3 sound3.mp3

why the second was the first?

Nascode · April 2013

Lua pairs function doesnt guarantee orders. http://www.lua.org/pil/7.3.html

OZApps · April 2013

If order is important to you, then you can use a numeric array.

However if you are insistant about using alphanumeric arrays and want them to be ordered as Sound1 ,Sound2 and Sound3, then the way for that would be

function(...)
 
-- temp  is an array that already has the files added into it and have the convention SoundX.mp3, where X is a number from 1 to 9999
 
 for i=1,3 do -- or you can use the #temp (for all items)
  print(i .. " = " .. temp["Sound" .. i])
 end
 
end

However I would simply use a numeric array as it is faster AND I can still access sounds[1], sounds[2] and sounds[3] rather than sounds["sound1"], sounds["sound2"] and sounds["sound3"]

hope that helps you in some ways

sslivka · April 2013

No it is not important to me, just wondering why. Thank you for your answers!

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