subfilter examples

[Mohammad]

In TW release 5.1.18, the new operator subfilter has been introduced. I am looking for some examples to show the application of this

new subfilter in action. There are two examples here but I did not understand where and how they should be used.

I would appreciate if you can give me some references if any or give few examples here

https://tiddlywiki.com/#subfilter%20Operator

https://tiddlywiki.com/#subfilter%20Operator%20(Examples)

--Mohammad

[TonyM]

Important examples here https://groups.google.com/forum/#!topic/tiddlywiki/dQuaT6ABpFY

[Mohammad]

Thanks Tony,

I am reading what you references. BUT

 

If we have a filter and then a subfilter, does it means we add new filter to previous one? I mean does this subfilter is something separate or will be AND to the main filter?

--Mohammad

[TonyM]

Mohammad,

The "main filter" could be the only part of the filter. What is Shure is my examples all work. Some more detailed analysys may be nessasary but I think each is a "run"

Regards
Tony

[Riz]

Imagine you want to dynamically create filters. You can obviously use macro definitions and use them like

filter=<<mymacro>>

Issue arises when you want to add steps to the filter. You cannot go
filter="<<mymacro>> +[tag[mytag]]"

Subfilter solves this issue. You can go like
filter="[subfilter<mymacro>] +[tag[mytag]]"
And in another tiddler you can go like
filter="[subfilter<mymacro>append[!]]"

Basically it enables you to define dynamic filters and reuse them.

sincerely,
Riz

https://ibnishak.github.io/Timimi/

[TonyM]

Mohammad,

As far as I can see In the filter where you use the subfilter you decide if there is a space or not between other filter operators and your subfilter. This influences how the subfilter is applied.

Need confirmation
tony

[Mohammad]

Many thanks Riz.

Cheers

Mohammad

[Mohammad]

Thanks Tony!

 I am practicing to learn it. Riz gave a very good example of course.

Cheers

Mohammad