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Re: Functional programming with GLib




For command line parsing I'd actually favour a slightly bolder
approach of deprecating GOptionContext, and having something slightly
more modern — in terms of being bindable in other languages, and
well-integrated with API like GApplication.

For instance, something similar to [clap.rs][0].

Ciao,
 Emmanuele.

[0]: https://clap.rs/

On 27 April 2017 at 15:15, Philip Withnall <philip@xxxxxxxxxxxxxxx> wrote:
> Hey,
>
> The general policy for GLib is that utility functions which are useful
> (and used in) several projects are considered for being added to GLib.
>
> To me, a functional programming approach using GLists is not something
> which every project is going to use. Is there any harm in keeping it as
> a separate library? There’s nothing stopping projects from linking to
> GLib *and* GXLib. :-)
>
> The command line parsing stuff you have looks a bit more widely
> applicable. Were you considering merging those into GLib?
>
> http://www.djcbsoftware.nl/code/gxlib/gxlib-Command-line-parsing.html
>
> Anyway, nice work on GXLib. It looks well documented.
>
> Philip
>
> On Sun, 2017-04-23 at 21:46 +0300, Dirk-Jan C. Binnema wrote:
>> Hi All,
>>
>> A while back, I wrote some functions for functional-flavored
>> programming
>> with GLib. It's fully documented[1], has tests, etc.
>>
>> It would (for me at least) be useful to have some of these functions
>> in
>> GLib-proper, but I suspect the GLib-maintainers are not /too/ eager
>> to
>> accept contributions to GList... anyway, perhaps its useful for
>> others.
>>
>> As a simple example, suppose we want to calculate the sum of primes
>> up
>> to 100 (a common task after all):
>>
>> ,----
>> > int    sum;
>> > GList *nums, *primes;
>> >
>> > nums   = gx_list_iota (100, 1, 1);
>> > primes = gx_list_filter (nums, (GXPred)gx_is_prime, NULL);
>> > sum    = gx_list_sum (primes); /* => 1060 */
>> >
>> > g_list_free (nums);
>> > g_list_free (primes);
>>
>> `----
>>
>> There's also folding, mapping etc. See a short article about this:
>>    http://www.djcbsoftware.nl/2015/10/04/functional-glists/
>> (2015?! time does fly). Am still developing it though.
>>
>> Repo: https://github.com/djcb/gxlib
>> Docs: http://www.djcbsoftware.nl/code/gxlib/
>>
>> Best wishes,
>> Dirk.
>>
>
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