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Re^3: Symbolic references

by LanX (Canon)
on Apr 15, 2013 at 05:53 UTC ( #1028682=note: print w/ replies, xml ) Need Help??


in reply to Re^2: Symbolic references
in thread Symbolic references

I've changed my code to be less terse and hopefully better understandable step by step.

> What if I may have a variable number of variables..

you can put a unlimited anount of elements into '$path' and it will work as long as the intermediate values really exist within the nested hashes (otherwise the result is undef).

> Is there a programatic way to read N variables into the reference?

??? what do you mean here with "reference"?

Cheers Rolf

( addicted to the Perl Programming Language)


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Re^4: Symbolic references
by Anonymous Monk on Apr 15, 2013 at 06:57 UTC
    I used the wrong word 'reference' it should have been variable. I've tried to impliment your code below, but I'm still lost...
    foreach $argnum (0..$#ARGV){ print "$ARGV[$argnum]\n"; my $path=$ARGV[$argnum]; @path=split /\//,$path; $node=node->{$_} for @path; print $node; } print "\n"; }
      got it! phew!
      foreach $argnum (0..$#ARGV){ $node=$ret; print "$ARGV[$argnum]\n"; @path=split /\//,$ARGV[$argnum]; print Dumper @path; #debugging helps! $node=$node->{$_} for @path; print $node; } print "\n"; }
      Thanks!
        Just a minor note: your way to iterate thru different arguments by index is rather cumbersome

        just do

        ~$ perl -E 'foreach $arg (@ARGV) { say split /\//,$arg }' 1/2 a/b/c 12 abc

        And plz consider using strict and warnings!

        Cheers Rolf

        ( addicted to the Perl Programming Language)

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