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Re: List-to-Scalar Function?

by perlmonkey (Hermit)
on May 09, 2001 at 03:45 UTC ( #78994=note: print w/ replies, xml ) Need Help??


in reply to List-to-Scalar Function?

To implement it using your syntax you could do something like:

sub operate (&@) { my $sub = shift; local $~; $~ = &$sub($_) for @_; return $~ }


So for your examples you would get:
use strict; sub operate (&@) { my $sub = shift; local $~; $~ = &$sub($_) for @_; return $~ } my @list = (4, 6, 2, 67, 123, 645, 23, 54 ); my $max = operate { $~ > $_ ? $~ : $_ } @list; print $max, "\n"; my $string = operate { $~.$_ } @list; print $string, "\n"; open FILE, $0; my $count = operate { $~ + /operate/ } <FILE>; print "Count = $count\n";


And the results are
max = 645 string = 462671236452354 count = 4


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