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From: dxf <dxforth@gmail.com>
Newsgroups: comp.lang.forth
Subject: Re: Parsing timestamps?
Date: Mon, 30 Jun 2025 19:07:35 +1000
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On 30/06/2025 5:15 pm, LIT wrote:
>> I explained how locals differ from PICK/ROLL.  In addition there's
>> no evidence PICK/ROLL is used frequently or held up as a solution.
>> As you appear to see a connection, I was hoping you would explain it.
> 
> Everyone is free to solve their problems
> the way they're most comfortable with - be
> it bezemerish string of DUP-SWAP-ROTs or
> PICK/ROLL.
> As for me, I'm convinced by this recommedation:
> 
> "Pick and Roll are the generic operators which
> treat the data stack as an array. If you find
> you need to use them, you are probably doing
> it wrong. Look for ways to refactor your code
> to be simpler instead."
> 
> In a way this statement can be extended to the
> use of local variables. Still, as I said, it's
> allowed. No need for "too ideological" approach
> if that works for the programmer, neither for
> insisting on "canonical" ways etc.

While many a stack op can be simulated using PICK and ROLL (hence CS-PICK
CS-ROLL) I'm unaware of anyone using them in place of.  If stack ops are
"canonical" it's because nobody has found a more efficient way of programming
a stack computer.  Recognizing this as the fact and the reality, a programmer
that's serious will deal with reality and not chase after ideology which is
the province of thought.