Certainly. Notice that the hash keys are "stringified objects", which include a memory locations, like this: 

% perl -le 'print bless +{}, "Foo"'        
Foo=HASH(0x814cbb8)

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So objects are considered equal only if their "stringifications" match. You still recover the original object from the corresponding hash value.

the lowliest monk

In reply to Re^3: Let's unite sets by tlm
in thread Let's unite sets by songahji

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