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Re: Lexical binding doesn't seem to be faster?

From: tomas
Subject: Re: Lexical binding doesn't seem to be faster?
Date: Fri, 8 Mar 2019 09:30:55 +0100
User-agent: Mutt/1.5.21 (2010-09-15)

On Fri, Mar 08, 2019 at 12:39:09AM -0500, Stefan Monnier wrote:


> FWIW, the usual case where lexical-binding leads to bigger&slower code
> is when you pass a lambda-expression to another function and that
> lambda-expression has free variables (in the lexical-binding case, it
> requires building a closure which is rather costly currently, whereas in
> the dynamic-binding case it relies on the dynamic-scoping instead).

Let's see if I got that right: in those cases, the code would (most
probably!) behave differently depending on the binding regime (lexical
vs dynamic), so it would be doing quite different things in each case?

-- t

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