2007/3/28, Loup Vaillant <loup.vaillant@gmail.com>:
> So here are a few questions:
> -> Is lexical scope that important when learning pure functional programming?
> -> Are environments helpful (even the slightest bit) when teaching
> lexical scope?
> -> Where does this idea come from? I have not read a single book, as
> single article nor blog talking about environments.
> -> How can we teach lexical scope? Is there a simple solution, the
> kind of a first year student can understand in less than an hour?

You may find the answer to the 3rd question in Structure and
Interpretation of Computer Programs (Abelson, Sussman & Sussman), p.
236 : "The Environment Model of Evaluation".

In one word : Scheme.

-- 
Pierre-Evariste DAGAND

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