Path: news.eternal-september.org!eternal-september.org!.POSTED!not-for-mail
From: Paul Rubin <no.email@nospam.invalid>
Newsgroups: comp.lang.forth
Subject: Re: Parsing timestamps?
Date: Sun, 29 Jun 2025 15:26:32 -0700
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dxf <dxforth@gmail.com> writes:
>> But aren't 'locals' actually PICK/ROLL in disguise?
> Do PICK/ROLL skim all the values off the stack and stuff them in
> variables to be later popped on and off the stack like a yo-yo?

Locals can be (and I thought usually are) implemented with the
equivalent of PICK and POST, on either the R stack or a separate L
stack.  ROLL is different, "n ROLL" actually shuffles n items around and
in most situations seems kind of nuts.