On Jan 27, Pozsar Balazs said:
>Thank for clarification. But one little drak spot:
>
>> Thus, accessing constants via &CONST is slower than, and not the same
>> process as, accessing it via CONST (or +CONST or CONST()).
>
>Is there any difference between CONST and CONST()?
Since CONST is defined before-hand, no. It has an empty prototype, so
both CONST and CONST() are the same. The reason you might need
CONST() is, as has been explained, before a =>, or inside a hash
subscript:
%programs = ( LANG() => { ... } ); # LANG => is like 'LANG' =>
print $programs{LANG()}{path}; # {LANG} is like {'LANG'}
>What is +CONST?
Another way of disambiguating, in the above examples:
%programs = ( +LANG => { ... } );
print $programs{+LANG}{path};
See perlop, and look for "Unary +".
--
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.
--
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
