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Do not duplicate your code Archive STOP and think again.There IS a better way! sub s which is short for subroutinesproc s which is short for procedures"But I want to make a couple of changes to the block of code that I was going to duplicate" you might say. That's NOT a problem. The bits that you would change in the duplicated code are the bits that you'll pass in to your sub / function / method / procedure as parameters , and if you also change the variable that the result is going to be put into, that's the immediate clue as to what you'll be returning.import (Python, Java), source (Tcl), require (Perl, PHP), use (Perl), from (Python) and include (PHP). In C and C++, functions work across programs in a slightly different way - rather than including the reference in the source, you'll bring in prototypes in the source and then the full code in your link loader. But that's a story for another day ...
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