Others have pointed out what is wrong with your code. Some have suggested interpolating the array, which I think is a good strategy here.

However, I haven't seen ?: in this thread yet. Which is strange, as all this if/elsif/... thing seems to do is assign to $from. 

my $from =
    "@movement" eq '0 1'  ? 'north' :
    "@movement" eq '1 0'  ? 'east'  :
    "@movement" eq '0 -1' ? 'south' :
    "@movement" eq '-1 0' ? 'west'  :
    die "Unknown direction: (@movement)";

[download]

I probably wouldn't use a lookup hash here. Redundancy's not so bad with only 4 items.

Juerd # { site => 'juerd.nl', plp_site => 'plp.juerd.nl', do_not_use => 'spamtrap' }

In reply to Re: Strange "Useless use of constant" message: should not appear at all! by Juerd
in thread Strange "Useless use of constant" message: should not appear at all! by muba

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