Re: Functional datatypes in Guile

[Thompson, David]

Hi pukkamustard,

On Tue, Feb 28, 2023 at 3:34 AM pukkamustard <pukkamustard@posteo.net> wrote:
>
>
> I've been using SRFI-146
> (https://srfi.schemers.org/srfi-146/srfi-146.html) for functional
> mappings. There's a Guile port:
> https://inqlab.net/git/guile-srfi-146.git/ (also in Guix -
> guile-srfi-146).

Your Guile port of (srfi srfi-146 hash) looks really nice!  A
functional hash is the most important data structure for our needs at
Spritely. Do you know if it's thread-safe (unlike vhashes)?  Andy's
fash implementation uses atomic boxes, for example.

Also, what are your thoughts on read syntax?  I find myself using
alists more often than I probably should because the syntax is
pleasant.  (hashmap comparator 'foo 1 'bar 2) is... okay, but terse
syntax for the common case of a hash with literal keys would be nice.
For example, #hq((foo 1) (bar 2)) for a hash with keys compared with
eq?  Scheme is kind of odd for not having hash literal syntax.

> I've previously used pfds (as mentioned by Maxime), but I've encountered
> some nasty issues that are keeping me from using it again
> (https://github.com/ijp/pfds/issues/5).

Good to know about this issue, thanks!

- Dave