Alex Cheung Tin Ka wrote:
>
> From: "John W. Krahn" <[EMAIL PROTECTED]>
>
> > Alex Cheung Tin Ka wrote:
> > >
> > > I have a problem about the list value.
> > > I have got a scalar say $a='a' and a list say @b = ('a', 'b','c');
> > > how can I check whether $a is one of the value in @b. Is there any
> > > easy way to do it and I got lost in perl.com's piles of documentation.
> >
> > if ( grep $a eq $_, @b ) { ... }
> >
> > use Quantum::Superpositions;
> > if ( $a eq any( @b ) { ... }
>
> what is the difference with this?
> grep(/$a/, @b);
> &
> grep $a eq $_, @b;
$ perl -e'
$a = q/d/; @b = qw/a b c d e f zzdzz g/;
grep /$a/ && print( "regex: $_\n" ), @b;
grep $a eq $_ && print( "equate: $_\n" ), @b;
'
regex: d
regex: zzdzz
equate: d
John
--
use Perl;
program
fulfillment
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