filter question: which tiddler is newer

[Mohammad Rahmani]

Back to winter 2019, when we were working on the Commander plugin we needed a comparison between two tiddlers to see which is greater. See [1]

The best solution we found (by BTC) at that time was as below [2] (still works and is part of Commander)

<$set name="tidBMod" value={{{ [[Bb]get[modified]] }}}>
<$set name="tidAMod" value={{{ [[Aa]get[modified]] }}}>
<$list filter="[<tidAMod>] [<tidBMod>] +[nsort[]last[1]removesuffix<tidAMod>]">
Yes, Aa is newer
</$list>
<$list filter="[<tidAMod>] [<tidBMod>] +[nsort[]last[1]removesuffix<tidBMod>]">
No, Aa is older
</$list>
</$set>
</$set>

With the advent of many new filter operator, I want to know if there is a shorter and more semantic solution can be found today Apr 2021

I thought about the below solution and it works in TW 5.1.23

<$vars dtb={{{[[Bb]get[modified]]}}}>

<$list filter="[[Aa]get[modified]compare:integer:gt<dtb>then[Aa]else[Bb]]">
<<currentTiddler>> is newer!
</$list>

</$vars>

But I am wondering if we could use :filter or some other operator to drop the $vars and dtb and perform the comparison in single $list

Note Aa and Bb are two tiddlers

Best wishes

Mohammad

[1] https://groups.google.com/g/tiddlywiki/c/9QQvkJkLogA/m/3AGSBBJKBgAJ

[2] https://groups.google.com/g/tiddlywiki/c/9QQvkJkLogA/m/UbIgaSFSBgAJ

[Saq Imtiaz]

Does this do what you need?

Aa Bb +[nsort[modified]limit[1]]

Or try something like this in 5.1.24 pre-release:

Aa Bb :sort:date[get[modified]] +[limit[1]]

See https://tiddlywiki.com/prerelease/#Sort%20Filter%20Run%20Prefix

[Mohammad Rahmani]

Hi Saq,

Very clever! Both works!

On Wed, May 5, 2021 at 11:08 AM Saq Imtiaz <saq.i...@gmail.com> wrote:

Does this do what you need?

Aa Bb +[nsort[modified]limit[1]]

I am wondering why we did not try this which was available from 2015? ;-)

 

Or try something like this in 5.1.24 pre-release:

Aa Bb :sort:date[get[modified]] +[limit[1]]

Great! So, we can use the new named prefix :sort?

Is it possible to have multiple steps filter like below

filter1 :filter[step2]  :filter[step3]

 

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[TW Tones]

Or this;

<$list filter="[[ActionDeleteTiddlerWidget]] [[ActionListopsWidget]] +[!sort[modified]]">

   <$link/> {{!!modified}}<br>

</$list>

;Newer test

<$list filter="[[ActionDeleteTiddlerWidget]] [[ActionListopsWidget]] +[sort[modified]] +[last[]]">

</$list>

;Older test

<$list filter="[[ActionDeleteTiddlerWidget]] [[ActionListopsWidget]] +[sort[modified]] +[first[]]">

</$list>

Tones

[TiddlyTweeter]

Mohammad wrote:

Back to winter 2019, when we were working on the Commander plugin ...

 I like how you used the "Royal WE" :-) (https://en.wikipedia.org/wiki/Royal_we)

Commander is brilliant! And basically YOU :-)

Best wishes

TT

[Saq Imtiaz]

@Mohammad:

 

Great! So, we can use the new named prefix :sort?

Is it possible to have multiple steps filter like below

filter1 :filter[step2]  :filter[step3]

Yes multiple filter runs can be combined just as before (with +, ~ etc). Note that the input to each filter run is the output from the previous run. 

[Mohammad Rahmani]

Hi Josiah,

On Wed, May 5, 2021 at 3:28 PM TiddlyTweeter <Tiddly...@assays.tv> wrote:

Mohammad wrote:

Back to winter 2019, when we were working on the Commander plugin ...

 I like how you used the "Royal WE" :-) (https://en.wikipedia.org/wiki/Royal_we)

I laughed a lot on this! Very nice!

But this is a real `we`! See the https://kookma.github.io/TW-Commander/#Acknowledgement

I remember how much people were kind to help to implement the Commander! You did a great job

on regex! See help/regular expression in https://kookma.github.io/TW-Commander/#%24%3A%2FCommander

which has been totally written by you!

Saq recently developed the Batch Edit button! Mark S did a lot of scripting part! and BTC macros and help will always be appreciated in developing SNR.

I remember Watt who did a lot of testing and read docs for English!

Commander is a real example developed by a group of people here!

We were working together at that time and I appreciate all their talent, time and kindness!

 

Commander is brilliant! And basically YOU :-)

:-) :-)

Thank you

 

Best wishes

TT

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[Mohammad Rahmani]

Thank you for clarification!

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[Mohammad Rahmani]

On Wed, May 5, 2021 at 2:35 PM TW Tones <anthony...@gmail.com> wrote:

Or this;

<$list filter="[[ActionDeleteTiddlerWidget]] [[ActionListopsWidget]] +[!sort[modified]]">

   <$link/> {{!!modified}}<br>

</$list>

;Newer test

<$list filter="[[ActionDeleteTiddlerWidget]] [[ActionListopsWidget]] +[sort[modified]] +[last[]]">

</$list>

;Older test

<$list filter="[[ActionDeleteTiddlerWidget]] [[ActionListopsWidget]] +[sort[modified]] +[first[]]">

</$list>

Tones

Thank you Tones! All works and are short!

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