At the point of invokation, those methods are returning their result based upon the internal state of their objects. By temporarially storing the (composite) values of the methods into variables whilst deferring the decision based upon them, you create a window for opportunity for the internal state of one or more of those objects to change, through injected code, delay or some other mechanism.
This sound very profound, but if you'd always follow this reasoning, you'd never break down complex statements into multiple statements, or for that matter, use subroutines.

Programming is about making trade-off. Yes, you create a window of opportunity for things to change. But your gain is simpler, easier to maintain code. It's a price I'm usually willing to pay.

Perl --((8:>*

In reply to Re^5: bloated 'if' formatting by Perl Mouse
in thread bloated 'if' formatting by eff_i_g

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