Filter efficiency question

[Dave]

Hi, I have a filter that works in a ViewTemplate, but it seems cumbersome

<$list filter="[all[current]!title[FrontPage]tag[errands]][all[current]!title[FrontPage]tag[work]]">
(Button to check as done)
</$list>

I want to have something appear if tagged with a list of any of a bunch of tiddlers (about 7 or 8, so this will get big) but not if it's certain other tiddlers (so far just FrontPage)

Is there a better way of filtering "tiddlers tagged from this list of tiddlers, but not if among this other list of tiddlers"?

Thanks,
- Dave

[TonyM]

Dave,

Any reason you cant create a new tag or two to tag other bunches. Then filter with these bunch tags?

In most cases I think the most efficient are the easiest to read because we spend more time changing them than running them.

Regards
Tony

[Jed Carty]

I am looking at making an intersects operator similar to the contains operator that lets you give a list of values instead and returns the tiddler if any values from the argument match any in the field of the input tiddler.

But since that doesn't exist yet you can use de morgan's law:

A or B or C ... => !A and !B and !C ...

so you can make your filter:

[all[current]!title[FrontPage]]-[!tag[work]!tag[errands]]

and if you add more tags you continue the second part like this:

[all[current]!title[FrontPage]]-[!tag[work]!tag[errands]!tag[foo]!tag[bar]]

I made a wiki that has some examples of how to translate logic statement to filters that may help a bit.

[Jed Carty]

Sorry, I didn't actually add the link to the wiki, here it is: https://ooktech.com/jed/ExampleWikis/FilterLogicExamples/

[Dave]

Thanks, but when I plug that in to the above filter (replacing the former) it doesn't work (nothing is returned)

[Jed Carty]

This works on tiddlywiki.com:

make a tiddler and give it the tag $:/tags/ViewTemplate

put this into the text field:

<$list filter='[is[current]!title[FrontPage]]-[!tag[work]!tag[errand]]'>
LOOK AT ME!!
</$list>

then tag a tiddler 'work' or 'errand' and it should get the text 'LOOK AT ME!!' added to it.

[Mohammad]

Great job Jed!  It shows how we can make complicated logical expression (filters).

Thank you

[Mohammad]

Jed,

 Why you have used such old tiddlywiki? I expected at least 5.1.17

-Mohammad

On Monday, October 22, 2018 at 5:49:59 PM UTC+3:30, Jed Carty wrote:

[Jed Carty]

It was the most recent version when I made it.

[Mohammad]

Thanks Jed

[Dave]

Thanks Jed. I'm not sure what I was doing wrong before, but it's working now. I think I seem to be having problems working with text on a phone vs with a mouse.