# Re: Functional programming with GLib

*Date*: Mon, 7 Aug 2017 23:55:43 +0200
*From*: Joël Krähemann <jkraehemann@xxxxxxxxx>
*Subject*: Re: Functional programming with GLib

Hi
Why not doing a different approach? Provide serialization to your list
and pass it to AgsFunction?
I would love to see something alike in GSequencer. Thus I did a boxed
type AgsComplex.
The mention object above shall be able to solve mathematical equations.
Note I is not implemented for now. But feel free to provide solver strategies ;)
The goal is to let the user describe its synth by a formula.
nongnu.org/gsequencer
Bests,
Joël
On Sun, Apr 23, 2017 at 8:46 PM, Dirk-Jan C. Binnema
<djcb.bulk@xxxxxxxxx> 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.
>
> --
> Dirk-Jan C. Binnema Helsinki, Finland
> e:djcb@xxxxxxxxxxxxxxx w:www.djcbsoftware.nl
> pgp: D09C E664 897D 7D39 5047 A178 E96A C7A1 017D DA3C
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