Re: Down with Upvalues
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- Subject: Re: Down with Upvalues
- From: "Jay Carlson" <nop@...>
- Date: 2001年8月30日 09:07:05 -0400
> Are you asking if a language can have both lexically scoped and
> dynamically scoped variables at the same time? Yes, this is true, but
> a language that allows some dynamic variables is not considered to be
> static or lexically scoped.
I don't buy this. I'm thinking of Oaklisp, which had fluid-let and (fluid
variablename) locatives. Does Oaklisp lose its lexical-scoping-nature
because of the fluid stuff, which is clearly an add-on after the fact? (I
believe it was implemented in terms of dynamic-wind.)
Jay