[Haskell-cafe] Re: How to check object's identity?

Hi Jan, in functional programming there is no such thing as "identity" as we understand the idea from OO. There is only such as thing as "equality" though. Günther Am 03.01.2009, 16:28 Uhr, schrieb Xie Hanjian :

Hi,

I tried this in ghci:

...

Prelude> 1:2:[] == 1:2:[] True

Does this mean (:) return the same object on same input, or (==) is not for identity checking? If the later is true, how can I check two object is the *same* object?

Thanks Jan

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