hey guys,
I'm playing with the map sub, I just recently discovered all the need tricks you can do with.
but since i'm posting here, i must be stuck at some point.
please have a look at the following: 
perl -e '@d=([0,"BE"],[3,"BUS"],[4,"BUS2"]); @a=map($_ , split(/,/, "B
+US2,BE") ) ; @b=map { my $mapkey=$_; map { [@{$d[$mapkey]}] if $d[$ma
+pkey]->[1] =~ /$a[$_]/ } 0..$#a } 0..$#d; use Data::Dumper;print Dump
+er(@b);'
$VAR1 = '';
$VAR2 = [
          0,
          'BE'
        ];
$VAR3 = '';
$VAR4 = '';
$VAR5 = [
          4,
          'BUS2'
        ];
$VAR6 = '';

[download]

or more readable: 
my @d=([0,"BE"],[3,"BUS"],[4,"BUS2"]);        # some default values
my @a=map($_ , split(/,/, "BUS2,BE") ) ;      # a customer setting for
+ instance
my @b=map { 
           my $mapkey=$_; 
           map { 
                [@{$d[$mapkey]}] if $d[$mapkey]->[1] =~ /$a[$_]/ 
               } 0..$#a 
          } 0..$#d;                   # @b will contain stuff that nee
+ds to be configured

use Data::Dumper;
print Dumper(@b);'
__END__
gives the following output:
$VAR1 = '';
$VAR2 = [
          0,
          'BE'
        ];
$VAR3 = '';
$VAR4 = '';
$VAR5 = [
          4,
          'BUS2'
        ];
$VAR6 = '';

[download]
The above code is a test scenario ofcourse.
What I want to achieve is that @b contains only the anonymous arrays which are found in @d, so i don't want the undef entries.
Any help is greatly appreciated...
Cheers!
--
to ask a question is a moment of shame
to remain ignorant is a lifelong shame

In reply to map weirdness by insaniac

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