On Wednesday, May 5, 2021 at 9:22:04 AM UTC+2 Mohammad wrote:

> On Wed, May 5, 2021 at 11:10 AM Saq Imtiaz <[email protected]> wrote:
>
>> True for all fields. A field is changed by creating a new Tiddler with 
>> the same fields (including title) and updating the necessary field when 
>> creating that new Tiddler.
>
>
> I did not know this! So, tiddlers are immutable is a correct sentence! Is 
> this the best way from performance point of view?
>

Editing internal memory would be faster, but it also creates some tricky 
problems. ... 

In TWclassic it is possible to directly change "portions" of a tiddler from 
a plugin. The core sometimes doesn't see these changes. So it doesn't 
trigger a refresh cycle.

The plugin author has to trigger the refresh cycle. But the plugin author 
doesn't know, if a full or partial update is needed. So the common practice 
in plugins was to always trigger a full refresh cycle, just to be sure, 
that the core _and_ all other plugins see it.

This behavior wastes much more performance as creating a new tiddler does 
in TW5. In TW5 there is no other way to change something, without the core 
knowing about it. So the core tells every plugin, what happend. 

I hope that makes it clearer. 

have
mario

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