[gambit-list] Parameter objects performance Q

John Cowan cowan at ccil.org
Sun Mar 8 13:02:16 EDT 2020

No fluid or dynamic variables in any standard before R7RS, and it is
trivial to roll your own parameters provided they don't have to interact
with threads: see R7RS.

On Sun, Mar 8, 2020 at 12:48 PM Lassi Kortela <lassi at lassi.io> wrote:

> > For fluid variables, see the withdrawn SRFI 15.
> Were fluid variables ever a part of any Scheme standard?
> Were any dynamic-variable-style facilities before R7RS?
> How does R6RS deal with dynamic variables - is the user expected to roll
> their own using dynamic-wind? I though parameterize was in that standard
> as well, but I looked again and it's not. Just some R6RS implementations
> have it.
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