Given that this works:

my $ref = [];
my %hash;
$hash{$ref} = 1;
print keys %hash;

[download]

and returns "ARRAY(0x.....)", my question is; is this likely to bring about some tutting and shaking of heads in experienced perl developers?

(Some background: I needed a method of storing which anonymous arrays out of a large number had been examined, and quickly checking that store to see if one had already been examined.)

In reply to Reference as a hash key by Anonymous Monk

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