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Re: Anything better for delayed lexical evaluation than (lambda () ...)?

From: Ludovic Courtès
Subject: Re: Anything better for delayed lexical evaluation than (lambda () ...)?
Date: Wed, 14 Dec 2011 14:52:19 +0100
User-agent: Gnus/5.110018 (No Gnus v0.18) Emacs/24.0.90 (gnu/linux)


Andy Wingo <address@hidden> skribis:

> But, in the event that David wants to continue with his current
> strategy, there are other things that can be done.  David, did you know
> that Guile's evaluator is implemented in Scheme?  That means that if you
> want an evaluator with different semantics -- for example, something
> closer to Kernel[0], as David appears to want -- then you can implement
> an evaluator that provides for fexprs and the like, and it will run
> about as well as Guile's evaluator.

Indeed.  FWIW, Skribilo [0] has its own input language, which is similar
to but different from Scheme, so it has its own reader and its own
evaluator, the latter being mostly a wrapper around ‘eval’.  This
strategy has worked well, and portably between 1.8 and 2.0.



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