I would tend to go with option c (the traditional if structure) for the following reasons:
- The vast majority of programmers - even non-perl programmers can (or should be able to) understand your intent.
- If at some future time, you need to add some additional processing, you can slip another statement in without restructuring the code:
if ( expr) {
a(); # why didn't they think of this before?
b();
}
- (Updated)You can easily slip an else clause in there when someone realises that is required as well.
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