Re^2: Do you consider these different or the same?

The one that looks closes is 'equal' however, its not clear how it defines "isomorphic". Assuming it defines it the same way I would (a reference used twice is different from two references, even if the content of the references is 'equal').

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$world=~s/war/peace/g

Comment on Re^2: Do you consider these different or the same?

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Re^3: Do you consider these different or the same? by spurperl (Priest) on Jul 01, 2005 at 12:19 UTC
I think "isomorphic" in this context means that the two datums are interchangeable. Not necessarily residing in the same memory location, though. `eq` is used to find out if it's actually the same reference. Besides, some languages/libraries can imlement a copy-on-write strategy (for example, QString in the Qt C++ library) that defy simple definitions.	[reply]