Observation The Tiddler Named Filter Run Prefix <https://tiddlywiki.com/prerelease/#Named%20Filter%20Run%20Prefix> in the pre-release names a prefix of *OR *which I believe is not currently implemented?
Tones On Wednesday, 9 December 2020 at 14:49:19 UTC+11 TW Tones wrote: > Folks, > > Exploring the pre-release I can see the reduce operator is an advance, > however these are my personal observations so far. > > I understand the reduce operator has its origin in bigdata and other > terminology, but it seems to me the documentation and examples is > insufficient to realise its full potential for all audiences. > > - I may not be too smart, but neither am I a dummy, but the > documentation is seriously hard to read. > - Some of these features such as the index and accumulator would be > nice in a regular filter, if they were available in the result of a list > widget for example > > The reduce operator runs a subfilter for each input title, passing the > result of the previous subfilter run as a variable. The initial value of > the accumulator can optionally be specified. It returns the result of the > final subfilter run. > > > *The reduce operator runs a subfilter for each input title, * > input-run > [reduce<subfilter>] ? > > *passing the result of the previous subfilter run as a variable * > *(<accumulator>)* > We should use quotes here "*previous subfilter run" as it needs this * > > In my words! > *The subFilter is applied to each title in the input, each iteration off > the subFilter can access the variable (<accumulator>) ie; "access the > result of the previous iteration" . ie <accumulator> stores the result of > the last subFilter. Thus if you use the add operator add<accumulator> to > the subFilter you can sum all values.* > > *The following variables are available within the subfilter: <index> > <accumulator> <revIndex> and <length> ONLY and <currentTiddler> varies with > each title.* > * The variables <index>, <revIndex> and <length> are available if you > need these values to be part of your subfilter calculations.* > > *There is only ever one output from the reduce operator! * > *The last value determined is the output of the reduce operator, as a > result all subfilters would be expected to include an operation with the > <accumulator> variable (eg add, multiply, divide etc..)* > > Regards > Tones > On Monday, 30 November 2020 at 22:36:42 UTC+11 [email protected] wrote: > >> I’m hoping that we’ll be able to release v5.1.23 of TiddlyWiki towards >> the end of this week. There’s some discussion over on GitHub about the last >> few loose ends to be tied up: >> >> https://github.com/Jermolene/TiddlyWiki5/issues/5130 >> >> The most important call to action is for developers of plugins and >> adaptations to take this opportunity to verify that the new release doesn’t >> break anything. >> >> The second call to action is for as many people as possible to put the >> new release through it’s paces by performing a test upgrade of the wikis >> that are important to them. Don’t switch over to the new version yet, of >> course. >> >> You can upgrade single file wikis here: >> >> https://tiddlywiki.com/prerelease/upgrade.html >> >> This is a really quite a massive release, with over 160 new features >> listed in the release note. (I am working on improvements to the >> presentation of the release note, it’s a bit of a wall of text right now). >> >> https://tiddlywiki.com/prerelease/ >> >> Just to mention a handful of new features that I’m particularly excited >> about: >> >> * Keyboard support for the main core dropdowns: search, new tag, tiddler >> type, new field, and the “link” button in the editor toolbar >> * The beginnings of support for switchable page templates (referred to as >> layouts), which will give us a route to introduce a more modern alternative >> layout >> * The ability to rename tiddlers during the import process (and to easily >> see which incoming tiddlers will overwrite existing tiddlers) >> * Many new filter operators that together make the TiddlyWiki filter >> language significantly more powerful and expressive >> * Improvements to the “tm-scroll” message making it possible to scroll to >> positions within a tiddler >> * Via the JSZip plugin, the ability to dynamically create ZIP files, >> giving us the ability to create static sites in the browser >> * New <$action-log> and <$log> widgets to aid debugging >> >> There are many, many bug fixes and other improvements too. >> >> As ever, I’m profoundly grateful to all the contributors who have pulled >> together to make this such an exciting release. You can see here how much >> activity there’s been since v5.1.22: >> >> >> https://github.com/Jermolene/TiddlyWiki5/graphs/contributors?from=2020-04-16&to=2020-11-30&type=c >> >> My own contribution graph (below) shows nicely how this release covers my >> illness and recovery from COVID, and undoubtedly a strange and painful time >> for all of us. I couldn’t be more pleased that this community has thrived, >> and seems to be working together so well at the moment. >> >> Please respond with any questions and thoughts here. >> >> Best wishes >> >> Jeremy. >> >> >> >> -- You received this message because you are subscribed to the Google Groups "TiddlyWiki" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/tiddlywiki/b7814c00-3654-419e-bd01-7b570d457706n%40googlegroups.com.
