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Re: Chomping Away (was Ovid Golf Chomps)

by mr.nick (Chaplain)
on Jan 09, 2001 at 08:19 UTC ( #50624=note: print w/ replies, xml ) Need Help??


in reply to (Ovid -Golf) Re(3): How do you chomp your chomps?
in thread How do you chomp your chomps?

Why not go ahead and Make A Better Chomp(tm)? Here's my first stab at it; it basically follows the rules of:

  1. Currently just strips all trailing white space
  2. If passed a reference, operate on it directly (duh! But also works for passing arrays of references) and return a dud value
  3. Otherwise return the modified string(s) without touching the originals.
  4. Works on scalar, arrays and hashes (why not? :) It modifes the values, not the keys, though it would be no problem to add that, too)
  5. Recursive (didn't a just read something here about "real" uses of recursion?) so you can use wacky data structures.

I didn't put a lot of brainpower into this; just wanted to share a thought of improvement. Enjoy!

sub mchomp { my @a=@_; local $_; foreach (@a) { if (ref $_ eq 'SCALAR') { $$_=~s/\s+$//; } elsif (ref $_ eq 'ARRAY') { @$_=mchomp(@$_); } elsif (ref $_ eq 'HASH') { for my $k (keys %$_) { $_->{$k}=mchomp($_->{$k}); } } else { s/\s+$//; } } wantarray ? @a: $a[0]; }

Examples

## returns the modified string print mchomp $string; ## modifies the variable directly mchomp \$string; print $string; ## returns an array of modified strings print join ",",mchomp @array; ## modifes the array inplace mchomp \@array; print join ",",@array; ## returns the modified hash %new=mchomp %hash;print values %new; ## modifes the hash inplace mchomp \%hash;print values %hash;


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