List Filter: A plus B or C

[Sapphireslinger]

How to I get all tiddlers tagged with "lewrockwell" plus "best sentence" OR "best paragraph"?

<$list filter="[tag[(lewrockwell + (best sentence)||(best paragraph)] !sort[title]]">
<h2><$link><$transclude field="title" mode="block"/></$link></h2>
<$transclude field="text" mode="block"/>
</$list>

The above doesn't work.

[Eric Shulman]

Let's assume you have three tags: A, B, and C.  To get the logical combinations of "A and (B or C)", start by refactoring the logic expression to remove parentheses:

A and (B or C) => (A and B) or (A and C)

In TW filter syntax, this can be written as two "filter runs", like this:

<$list filter="[tag[A]tag[B]] [tag[A]tag[C]]">
...
</$list>

enjoy,

-e

 

[Sapphireslinger]

Thank you!

[Jed Carty]

For future reference, I wrote up some notes about how to transfrom Boolean logic into filters here https://ooktech.com/jed/ExampleWikis/FilterLogicExamples/

It needs to be updated with some new filter operators that are available, but it covers the basics.

[Mohammad Rahmani]

This is one of the best sources to learn filter logic!

many thanks for sharing Jed!

Best wishes

Mohammad

On Thu, Jun 11, 2020 at 4:41 PM Jed Carty <inmy...@gmail.com> wrote:

For future reference, I wrote up some notes about how to transfrom Boolean logic into filters here https://ooktech.com/jed/ExampleWikis/FilterLogicExamples/

It needs to be updated with some new filter operators that are available, but it covers the basics.

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