On Apr 22, Jon Howe said:
Can anyone tell me the best method for removing duplicate array values.
I think the FAQ answers this best.
perldoc -q uniq
--
Jeff japhy Pinyan [EMAIL PROTECTED] http://www.pobox.com/~japhy/
RPI Acacia brother #734 http://www.perlmonks.org/
Can anyone tell me the best method for removing duplicate
array values.
eg:
@array = qw( a a a b b b c);
becomes after some operation I cant seem to figure:
@new_array_or_same = (a b c);
In this situation, I usually use a hash instead of an array so I can
create highly useful
i`m not quite shure because i`m a newbie to, but
try using some RegExp like tr/some pattern/final idea/
and dont forget that tr// and s// have many more functions ex. using the
(?). The book that i find most explainable about RegExp is Beginning Perl
from Wrox Publishing.
-
On Monday, April 22, 2002, at 09:29 , David Gray wrote:
Can anyone tell me the best method for removing duplicate
array values.
eg:
@array = qw( a a a b b b c);
becomes after some operation I cant seem to figure:
@new_array_or_same = (a b c);
In this situation, I usually use a hash
From: drieux [EMAIL PROTECTED]
On Monday, April 22, 2002, at 09:29 , David Gray wrote:
Can anyone tell me the best method for removing duplicate
array values.
eg:
@array = qw( a a a b b b c);
becomes after some operation I cant seem to figure:
@new_array_or_same = (a b c);
Hé ! Jenda
this slice thing is really very nice.
hash{@array1}=array2;
I saw it many times used in constructor of Object Oriented Perl's code.
Could you explain sequencely the syntax please ?
José.
-
Yahoo! Mail -- Une adresse yahoo.fr gratuite et en
Gosh.. what ever happened to good ol' grep
my %seen;
@uniq = grep !$seen{$_}++, @array;
-Original Message-
From: Jon Howe [mailto:[EMAIL PROTECTED]]
Sent: Monday, April 22, 2002 12:30 PM
To: [EMAIL PROTECTED]
Subject: remove duplicate values from array
Can anyone tell me the
From: Jos Nyimi [EMAIL PROTECTED]
this slice thing is really very nice.
@hash{@array1}=@array2;
I saw it many times used in constructor of Object Oriented Perl's
code.
Could you explain sequencely the syntax please ?
Well I don't think I can make up a better explanation than the one
Ok, thanks !
I read it and every thing becomes clear to me :-)
José.
Jenda Krynicky [EMAIL PROTECTED] a écrit : From: José Nyimi
this slice thing is really very nice.
@hash{@array1}=@array2;
I saw it many times used in constructor of Object Oriented Perl's
code.
Could you explain
Assuming that the array has been converted to a scalar, then the
following Lookaround Assertion works:
#!/usr/bin/perl
$_ = 'a a a b b c c';
1 while s/\b(\w+) \s (?= \1\b ) //gxi;
print $_, \n;
The scalar can be reconverted to an array.
Not sure if this is any faster.
Alfred,
Project Breeze
On Monday, April 22, 2002, at 03:43 , Alfred Vahau wrote:
Assuming that the array has been converted to a scalar, then the
following Lookaround Assertion works:
#!/usr/bin/perl
$_ = 'a a a b b c c';
1 while s/\b(\w+) \s (?= \1\b ) //gxi;
print $_, \n;
Survey Says:
Benchmark: timing
On Monday, April 22, 2002, at 11:53 , Nikola Janceski wrote:
Gosh.. what ever happened to good ol' grep
my %seen;
@uniq = grep !$seen{$_}++, @array;
http://www.wetware.com/drieux/CS/lang/Perl/Beginners/BenchMarks/
will show you that this works just slightly slower than just
the hashing
12 matches
Mail list logo
