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  • I've seen this style a few times before, I guess it's useful so you can include the call within a conditional operation and test its return within the conditional call. Commented Aug 17, 2009 at 11:24
  • David: this style lets you use the result of the function as an argument for another function call, e.g. another_function(my_function(a,b), my_function(c,d), my_function(e,f)); instead of my_function(a,b); my_function(c,d); my_function(e,f); another_function(b,d,f); Commented Aug 17, 2009 at 11:34