state & effects

[spir]

Hello,

In a recent thread about pure functions, I argued about the fact that what we actually need, and miss, is a clear definition of what state is and is not. I just stepped on a paper by Alessandro Warth (author of OMeta) and Alan Kay (author of... ;-) prcisely on this topic:
	Worlds: Controlling the Scope of Side Effects
	http://www.vpri.org/pdf/rn2008001_worlds.pdf
FWIW...

Denis
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vit esse estrany ☣

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