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It never ceases to amaze me, how much more there is to learn in Perl. I've been using Perl for around 5 years and I tried to do something today and was suprised that I could not. Consider the following code...
#!/usr/bin/perl use strict; use warnings; my %hash = ( key => 'value'); my @array = (1..5); foreach $hash{key} (@array){ print "\$hash{key} is $hash{key}\n"; }
I would have assumed that $hash{key} would be a valid iterator variable but it's not. It dies with the message
syntax error at ../../ line 9, near "$hash{key"
Execution of ../../ aborted due to compilation erro

Obviously this is easy to get around and seeing I've never needed it before I guess it isn't a big deal, but I was suprised it wouldn't parse correctly.

The reason I attempted this BTW, was I had some validation routines and figured I would extend them to validate multiple values by wrapping the existing code in a forloop. (the inner code references the hash key). It's trivial to fix but is anyone else suprised by this?


"To be civilized is to deny one's nature."

In reply to Surpised by foreach iterator limitation by shotgunefx

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