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Re: Modern Perl: The Book: The Draft

by roboticus (Chancellor)
on Jul 05, 2010 at 13:39 UTC ( #848065=note: print w/replies, xml ) Need Help??

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    # new programmer from C/C++ background
    my $count = @array_of_stuff;
    ...
    
    # More advanced: operate on the whole list
    @array_of_stuff = map { $_*3 } @array_of_stuff
    

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[Eily]: It can also be used to force a copy, and remove magic from a variable
[Eily]: there was a post some time ago about variable coming from regex taking more space than the same string defined directly IIRC
[Eily]: and if there's XS, make sure the scalar holds a string representation, that sounds like bad practice though (forcing that on the call side)
[choroba]: You should never pass $1 without double quotes to a sub
[choroba]: or "I should never", at least
[choroba]: that's not the sub's business
[Eily]: choroba but does $name = $1 solve the issue ?
[Eily]: if so, most subs start with my (VARIABLES) = @_ anyway

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