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Receiver knowing the sender?Does anyone have any reference material or thoughts on the idea of a method in an object oriented language always being allowed access to the sender of that message? It seems to be universally true that the sender of a message is unknown to the method unless explicitly passed as a parameter. I'm curious as to why that seems to be the default assumption. My gut instinct is that the rationale is connected with the idea of preserving encapsulation, but I wonder if that's really been tested or if that's more of a gut feeling that's been passed down through the years? (I know of no language that would prevent a sender from sending a reference to itself along as a message parameter - and indeed that is a common way around this limitation when the need arises. Why enforce the barrier in one case in the name of encapsulation, but not another if that is indeed the reason?) By BigZaphod at 2009-08-11 23:20 | LtU Forum | previous forum topic | next forum topic | other blogs | 7266 reads
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