default values of 'false' in data description

["Thomas Blom" <thomasblom@...>]

Hello,

Simple question here:

sounds =
{
  { name="beep", file="./media/beep.wav" },
  { name="bloop", file="./media/bloop.wav", loop=false },
}

If I want the parameter "loop" for a sound to default to true when  
unspecified I thought I would write:

shouldLoop = sounds[1].loop or true  -- (nil or true) => true

but then it doesn't work for the second entry:

shouldLoop = sounds[2].loop or true  -- (false or true) => true

This was a bit of a surprise, since (nil or false) => false.


What's the elegant idiom for this situation?





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