Progressing my programming and have a few simple questions to ask. this is one. if I have a sub that does some function

 sub doSomething
 {
   my ($var) = @_;
   print $var;
 }
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Say I have a case where If $var equals a particular value I want it to print in a different way. What's the best way to add this extra functionality cleanly.

To add some perspective I have a large legacy code base that has some nice subs for creating html output but they are littered with little if functions so that the sub does something slightly different if x or y is true.

I can see 2 options

• I leave the if statements but then when you call a sub you can't really tell what it will return. As it can vary depending on what if's it might match.
• I could copy the sub into a new sub that implements basically the same functionality but with this small change. (breaks the DRY principal).

Any thoughts?

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