1. Posted by Shinisuryu on Tue, 20 Jul 2010 14:29:11

    I know the basics of giving a variable a value, but I've seen something that I'm not totally sure I understand.

    Blah1 = (Blah2 == 0 and Blah3 or Blah2)

    Now, is the first part just like a if comparison? and if not, where would I figure out how that process works?

    Sorry if this is kind of confusing, I've been stuck for a bit, trying to figure out this. x.x

  2. Posted by jnwhiteh on Tue, 20 Jul 2010 15:07:11

    I know the basics of giving a variable a value, but I've seen something that I'm not totally sure I understand.

    Blah1 = (Blah2 == 0 and Blah3 or Blah2)

    Now, is the first part just like a if comparison? and if not, where would I figure out how that process works?

    Sorry if this is kind of confusing, I've been stuck for a bit, trying to figure out this. x.x

    This sort of construction is covered in Chapter 2, when we discuss the boolean and and or operators. Fully expanded, it's doing roughly the following:

     if Blah2 == 0 then
   Blah1 = Blah3
 else
   Blah1 = Blah2
 end

    This is accomplished using the short circuit evaluation of bolean expression. More information can be found here and here.

  3. Posted by Shinisuryu on Tue, 20 Jul 2010 15:15:39

    Oh wow, that makes so much more sense now. Thanks! ( I am so buying this book asap. )