[OpenSCAD] help with 'if' statement?

[Chris Gray]

this feels silly to me, being a programmer :)

but how does an if statement work in OpenSCAD?

I'd like to say


module foo(x)
{
      if(x == 0)
      {
            y = 10;
      }

      // do work with y
}



when I do this I get a parser error?  if I were to call a module instead of
doing an assignment everything would be fine


how would I do such a thing?
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