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Re^2: Perl oddities

by Anonymous Monk
on Mar 01, 2005 at 16:11 UTC ( #435501=note: print w/replies, xml ) Need Help??

in reply to Re: Perl oddities
in thread Perl oddities

You aren't subtracting from a left squiggly when you put a minus in front of it either. It's not that + in this expression is special cased. Unary + in Perl is a noop. (Just like unary plus is a noop when doing arithmetic). In the example you give, putting a plus there is just one of the ways to do disambiguations. Putting parenthesis after shift works as well, as well as something else that's essentially a noop (adding an empty string for instance).

I wouldn't call an idiom a Perl oddity - it's not part of the language itself, just an often used construct.

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