Thanks Mohammad, I'll check it out !
On Wednesday, May 6, 2020 at 3:49:23 PM UTC+4, Mohammad wrote: > > Hi Eric, > > Thank you for sharing! > > Looking in TW-Scripts you can find two great resources for working with > filters: > > > - Jed Carty: https://ooktech.com/jed/ExampleWikis/FilterLogicExamples/ > - Tobias Beer: https://tobibeer.github.io/tw/filters/#Filter%20Examples > > > > and I alos would like to add the great interactive playground by Eric > Shulman > http://tiddlytools.com/filtergenerators.html > > > These are three wonderful sources for learning filters and of course the > holly TW-Scripts :-) :-) > > --Mohammad > > > On Wednesday, May 6, 2020 at 3:44:52 PM UTC+4:30, Eric N. wrote: >> >> I was stuck in my dev >> <https://groups.google.com/forum/#!topic/tiddlywiki/H90XO43PblE> because >> I couldn't output the intersection of two filters, each made of several >> runs. I didn't find a built-in function to do so, and I couldn't find a >> satisfying solution online. But I eventually found my own solution, shared >> here. >> >> Say I want to get all the tiddlers that satisfy the following conditions >> (toy example here, could also have a pair of very complex filters): >> >> (has tag Todo OR starts with "a") AND (has tag Howto OR starts with "al") >> >> This is computed by the following code, where the output list is enlist >> <setAinterB>, which is displayed by the list-links macro. >> >> <$set name="filterA" filter="[tag[Todo]] [all[]prefix[a]]"> >> <$set name="filterB" filter="[tag[Howto]] [all[]prefix[al]]"> >> <$set name="setAunionB" filter="[enlist<filterA>] [enlist<filterB>]"> >> <$set name="setAnotB" filter="[enlist<filterA>] -[enlist<filterB>]"> >> <$set name="setBnotA" filter="[enlist<filterB>] -[enlist<filterA>]"> >> <$set name="setAinterB" filter="[enlist<setAunionB>] -[enlist<setAnotB>] >> -[enlist<setBnotA>]"> >> >> <<list-links "[enlist<setAinterB>sort[]]">> >> >> </$set> >> </$set> >> </$set> >> </$set> >> </$set> >> >> >> *Caveat* : if a filter output contains double brackets (say a tiddler >> named "oh what a [[bad]] name") it breaks the enlist processing, and you >> won't have the correct output. >> >> >> Best, >> Eric >> > -- 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/9d1c30af-b868-4193-a563-f9d766dcbce0%40googlegroups.com.
