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When writing/formatting code, amongst other things I strive to reach two goals:

  • Write consistently - ie. don't express the same thing in two different ways
  • Write cleanly - don't use more parentheses, braces, brackets, etc. than necessary, but also use enough of them to be clear.

An example for not being consistent in choosing your method names would be

$obj->SetName($value); $obj->set_title($newtitle);

As another example, I'm not a fan of too many parentheses. I usually write one of

print join ' - ', grep { -d } @list; print join(' - ', grep { -d } @list);

rather than

print(join(' - ', grep({-d}, @list)));

Especially for Perl built-in functions, a variety of styles exist as many can be called both with and without parentheses. I find myself often leaving away the parentheses, just to have to bring them back in to solve some precedence problem. And then I am left with a weird mixture of functions that use them and functions that don't. An example of things that just happen because of not strong enough habits:

open(my $fh, '>', $filename); print $fh $message; myownfunction($param1, $param2); close $fh;

Which brings me to my question (sorry it took so long): What do you guys do to have a consistent style for both Perl built-in functions and your own subroutines?


In reply to Embracing functions with parentheses by crenz

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