On Jun 12, Elias Assmann said:
>On Tue, 11 Jun 2002, Jeff 'japhy' Pinyan wrote:
>
>> modifies the ACTUAL argument you passed to rcsname()? Only if you had
>> done
>>
>> sub rcsname {
>> $_[0] =~ s/foo/bar/;
>> }
>> or some other specific effort would you have modified the argument to the
>> function.
>
>So Perl passes subroutine arguments by reference? I thought they
>would be copies in the first place...
Don't say pass-by-reference, since "reference" means something entirely
different in Perl. It's pass-by-alias. $_[0] is aliased to the first
argument you sent to the function.
--
Jeff "japhy" Pinyan [EMAIL PROTECTED] http://www.pobox.com/~japhy/
RPI Acacia brother #734 http://www.perlmonks.org/ http://www.cpan.org/
** Look for "Regular Expressions in Perl" published by Manning, in 2002 **
<stu> what does y/// stand for? <tenderpuss> why, yansliterate of course.
[ I'm looking for programming work. If you like my work, let me know. ]
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