[tw5] Re: Tricky Filter Question
Just using pseudocode to understand the process: bCount = the number of entries in B aCount = the number of entries in A *minus 1* (i.e. minus the last entry which the process always leaves as is, so the last one is ignored) aLastEntry = the last entry Result will be the final list LoopRangeEnd = aCount Loop, setting nIndex from 1 to LoopRangeEnd *(in steps of 1)* If item nIndex from A exists in B Then add item nIndex from A to Result Otherwise If nIndex > bCount Then add the last item from A to Result Otherwise Then add item nIndex from B to result <-- after the main process, tack on the last entry from A --> Finally, add the last item from A to result Let me know if that makes sense. If it does, I think I can do that. On Monday, February 15, 2021 at 5:11:56 AM UTC-4 scourfie...@gmail.com wrote: > Ideally "Alternative" would just be overriden by Delta, since it doesn't > appear in List B > On Monday, 15 February 2021 at 03:26:34 UTC cj.v...@gmail.com wrote: > >> Silly question: If A was : Alpha Beta Alternative Delta, and B was still >> "Alpha Gamma", what should the final result be? >> >> On Sunday, February 14, 2021 at 8:25:57 AM UTC-4 scourfie...@gmail.com >> wrote: >> >>> Hey all >>> >>> I've got a situation where I have two lists. List A and List B. I've >>> specified some dummy info below: >>> >>> *A: *Alpha Beta Gamma Delta >>> *B **(this will change by user input, but for this example:) *Alpha >>> Gamma >>> >>> I want to write a filter to apply to List A where if any item does not >>> also appear on List B (i.e. in this case Beta and Delta are missing), it is >>> overwritten by the immediately subsequent value in List A, except the very >>> last item in List A which is remains in place to act as a default value if >>> no subsequent value can be found. >>> >>> So in this example the filtered version of List A would output as: *Alpha >>> Gamma Gamma Delta*, because Beta was not present in List B so it is >>> replaced by the next value of Gamma, and Delta remains because it is at the >>> very end. >>> >>> My question is, is there a way to do this with a static filter >>> expression? I'm sure I could make something with action-listops widgets >>> that would do the job when they were activated, but ideally I want >>> something that updates automatically whenever the user changes List B. >>> >>> Any help anyone could provide would be much appreciated. >>> >>> Thanks >>> Joseph >>> >> -- 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 tiddlywiki+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/tiddlywiki/79e4098f-9095-4cae-9689-7b87c8e1252dn%40googlegroups.com.
[tw5] Re: Tricky Filter Question
Ideally "Alternative" would just be overriden by Delta, since it doesn't appear in List B On Monday, 15 February 2021 at 03:26:34 UTC cj.v...@gmail.com wrote: > Silly question: If A was : Alpha Beta Alternative Delta, and B was still > "Alpha Gamma", what should the final result be? > > On Sunday, February 14, 2021 at 8:25:57 AM UTC-4 scourfie...@gmail.com > wrote: > >> Hey all >> >> I've got a situation where I have two lists. List A and List B. I've >> specified some dummy info below: >> >> *A: *Alpha Beta Gamma Delta >> *B **(this will change by user input, but for this example:) *Alpha Gamma >> >> I want to write a filter to apply to List A where if any item does not >> also appear on List B (i.e. in this case Beta and Delta are missing), it is >> overwritten by the immediately subsequent value in List A, except the very >> last item in List A which is remains in place to act as a default value if >> no subsequent value can be found. >> >> So in this example the filtered version of List A would output as: *Alpha >> Gamma Gamma Delta*, because Beta was not present in List B so it is >> replaced by the next value of Gamma, and Delta remains because it is at the >> very end. >> >> My question is, is there a way to do this with a static filter >> expression? I'm sure I could make something with action-listops widgets >> that would do the job when they were activated, but ideally I want >> something that updates automatically whenever the user changes List B. >> >> Any help anyone could provide would be much appreciated. >> >> Thanks >> Joseph >> > -- 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 tiddlywiki+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/tiddlywiki/1a9d0297-c320-4dee-a770-01baed366da6n%40googlegroups.com.
[tw5] Re: Tricky Filter Question
Silly question: If A was : Alpha Beta Alternative Delta, and B was still "Alpha Gamma", what should the final result be? On Sunday, February 14, 2021 at 8:25:57 AM UTC-4 scourfie...@gmail.com wrote: > Hey all > > I've got a situation where I have two lists. List A and List B. I've > specified some dummy info below: > > *A: *Alpha Beta Gamma Delta > *B **(this will change by user input, but for this example:) *Alpha Gamma > > I want to write a filter to apply to List A where if any item does not > also appear on List B (i.e. in this case Beta and Delta are missing), it is > overwritten by the immediately subsequent value in List A, except the very > last item in List A which is remains in place to act as a default value if > no subsequent value can be found. > > So in this example the filtered version of List A would output as: *Alpha > Gamma Gamma Delta*, because Beta was not present in List B so it is > replaced by the next value of Gamma, and Delta remains because it is at the > very end. > > My question is, is there a way to do this with a static filter expression? > I'm sure I could make something with action-listops widgets that would do > the job when they were activated, but ideally I want something that updates > automatically whenever the user changes List B. > > Any help anyone could provide would be much appreciated. > > Thanks > Joseph > -- 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 tiddlywiki+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/tiddlywiki/468dd8da-2cb5-400c-9b92-9da9e633c708n%40googlegroups.com.
