Query: Save a Timestamp. HOW?

[@TiddlyTweeter]

I'm wondering if the value of the <<now>> macro can be SAVED to a State Tiddler at the moment it is run?

Is that possible?

Any help/tips appreciated.

@TiddlyTweeter

[Jed Carty]

This works:

<$button>
CLICK!!
<$action-setfield bob=<<now>>/>
</$button>

If you mean how to save it without the button than that means it has to change a tiddler as a side effect of rendering which is one of the things tiddlywiki avoids doing.

If you are trying to use this to test how long it takes to render a tiddler than there may be better ways to do it, like rendering it into a fake dom node and using javascript to check the time difference.

[@TiddlyTweeter]

Thanks Jed. That is really helpful example and information.

Yes, I was hoping to use it to time a complex Tiddler render. But I can use the button for another case, so its still useful.

I'll look at the fake dom route, though probably beyond my competence.

Best wishes
Josiah

[Thomas Elmiger]

Hi Josiah,

What exactly are you trying to achieve?

Maybe I have some interesting but complex macros from my Reminders for ToDoNow.

Basically they render a list, if a given date (from a field) is in the past.

Cheers
Thomas

[@TiddlyTweeter]

Hi Thomas

I'm working with long sequences of complex regular expressions in one Tiddler. The issue is that sometimes I need to optimise one or two of them that are slowing render. But unless I can insert a timer that records the time at a given point I have no idea which of the regular expressions are inefficient. This makes development overly complicated. Without it I have to, one-by-one, test the regex. Fine if you have 3. Unworkable if you have 25.

My BEST scenario would be able to insert a timestamp before and after the regular expressions I think are the problem to isolate the issues (in render). It is NOT important if that saving of a Timestamp is itself an overhead, it can be adjusted for. And, in some ways I think it would be better saved to a separate State Tiddler rather than a field, if you grasp what I mean.

Please ask if anything is unclear or you need examples.

Best wishes
Josiah

[Thomas Elmiger]

In this case, I would try to modify the regex engine to log a timestamp in the browser console after each run … that would not require much JS knowledge I guess.

Good luck!
Thomas

[@TiddlyTweeter]

Thanks Thomas

Your conclusion kinda reflects what Jed said before.

So I will look more at what using console tools can do.

Best
Josiah