Hi Alex! Thanks for that!
On 18.02.20 15:04, Alex Sassmannshausen wrote: > Heya, > > Zelphir Kaltstahl <zelphirkaltst...@posteo.de> writes: > >> Hi! >> >> This reminds me of something: Is there something like >> https://docs.racket-lang.org/lens/index.html for Guile? Or perhaps an >> easy to understand tutorial on implementing it? > Check out https://gitlab.com/a-sassmannshausen/guile-lens > > It's an implementation I did for fun a while ago. Can't remember how > faithfully it implements lenses as compared with racket's… > > Best wishes, > > Alex > >> Regards, >> Zelphir >> >> On 2/18/20 2:38 PM, Christopher Lam wrote: >>> A bit late, and perhaps not as sophisticated as some bigger modules here. >>> >>> Two functions defined as follows: nested-alist-set! nested-alist-get at >>> https://github.com/Gnucash/gnucash/blob/1f83cfaf64d1cd3c8862b427dd043154f780a772/gnucash/report/html-chart.scm#L37 >>> >>> Consider a nested alist describing unix file system >>> (define lst >>> (list >>> (cons 'usr (list >>> (cons 'bin "binary files") >>> (cons 'games "g4m3s") >>> (cons 'include (list >>> (cons 'guile (list >>> (cons '2.2 "old"))) >>> (cons 'linux "da best"))))))) >>> >>> We can access a leaf node via (nested-alist-get lst '(usr include linux)) >>> --> "da best", and set a leaf node via (nested-alist-set! lst '(usr include >>> python) "boo"). This is probably easy to seasoned schemers, but still a >>> nice pair of functions to use in modifying nested alists before conversion >>> into json. >>> >>> On Mon, 17 Feb 2020 at 09:16, Ludovic Courtès <l...@gnu.org> wrote: >>> >>>> Hi! >>>> >>>> Ricardo Wurmus <rek...@elephly.net> skribis: >>>> >>>>> What do you think about adding these things to >>>>> https://notabug.org/cwebber/guile-webutils/ ? This was once intended to >>>>> be a collection of useful tools that come in handy when writing web >>>>> applications. >>>> I didn’t know about guile-webutils but consolidating Web tools in this >>>> package sounds like a great idea! >>>> >>>> Ludo’. >>>> >>>> >
