Thank you Jeremy for pointing this out. I understand the implications and dangers, especially when random is part of a filter run.
My use case is very simple, I only intend to generate an integer, which should be its final output (so, actually a string) and not an argument in any subsequent macro or filter operation. The reason I originally asked for a random filter operator was based on the assumption that filters are central to so many things within TiddlyWiki, including maths. I wasn't aware of the proposed shuffle operator. I will follow the developments. Regards, Hubert On Thursday, 23 April 2020 15:37:26 UTC+1, Jeremy Ruston wrote: > > There’d been some discussions about this before. A straightforward macro > like this can cause problems if not used carefully. > > There are some subtle assumptions that filter execution is deterministic > (ie, a given filter string will evaluate to the same list every time it is > executed in the context of the same tiddler store values). For example, the > list widget re-evaluates the filter each time it is refreshed, and detects > changes to the list. If there were a randomising filter operator then the > filter would be deemed to have changed every time, leading to continuous > repeated refreshing of the list widget content. > > Matt Lauber has contributed a shuffle operator that should be more robust, > but has yet to be finished off: > > https://github.com/Jermolene/TiddlyWiki5/pull/3712 > > Best wishes > > Jeremy > > > > On 23 Apr 2020, at 15:07, TonyM <[email protected] <javascript:>> wrote: > > Hubert, > > Thanks for sharing ! > > Tony > > On Thursday, 23 April 2020 22:24:22 UTC+10, Hubert wrote: >> >> OK, I've written this quick and dirty one-liner JavaScript macro that >> takes two arguments: min and max (ideally integers; any floats are floored >> down on output). Input arguments (min and max) are included in the random >> output. >> >> Shorthand syntax below. In this example the macro will output an integer >> between 10 and 30 (inclusive). >> >> <<Random 10 30>> >> >> File attached if anyone finds it useful. >> >> Regards, >> Hubert >> >> On Thursday, 23 April 2020 13:11:18 UTC+1, Hubert wrote: >>> >>> Hi Tony, >>> >>> Also using now to return the milliseconds may be quite helpful >>>> >>>> <<now "0XXX">> >>>> >>> >>> Wow, that's very creative! Thank you. Through some further tweaking of >>> that we might even be able to define the min and max integers for the >>> random range as well. >>> >>> That could be useful - however I thing some of the maths plugins include >>>> this eg evans formula plugin. >>>> >>> >>> Yes, Evan's formula has been my go-to maths plugin for years, also for >>> random. >>> >>> Thanks again, >>> Hubert >>> >>> >>> On Thursday, 23 April 2020 13:06:16 UTC+1, TonyM wrote: >>>> >>>> Hubert, >>>> >>>> That could be useful - however I thing some of the maths plugins >>>> include this eg evans formula plugin. >>>> >>>> Also using now to return the milliseconds may be quite helpful >>>> >>>> <<now "0XXX">> >>>> >>>> However just for one shot, not in a list. >>>> >>>> Regards >>>> Tony >>>> >>>> On Thursday, April 23, 2020 at 9:52:20 PM UTC+10, Hubert wrote: >>>>> >>>>> Hello, >>>>> >>>>> It appears that Mathematics Operators >>>>> <https://tiddlywiki.com/prerelease/static/Mathematics%2520Operators.html> >>>>> don't currently include a random operator. >>>>> >>>>> I know this feature can be easily written as a macro with just a few >>>>> lines of js or, otherwise, the fomula plugin already ships with random >>>>> out of the box. >>>>> >>>>> However, I think it would be a great to have the random operator in >>>>> the core, just like the range >>>>> <https://tiddlywiki.com/#range%20Operator> operator was added not so >>>>> long ago. >>>>> >>>>> Just some thoughts. >>>>> >>>>> Regards, >>>>> Hubert >>>>> >>>>> >>>>> >>>>> > -- > You received this message because you are subscribed to the Google Groups > "TiddlyWiki" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected] <javascript:>. > To view this discussion on the web visit > https://groups.google.com/d/msgid/tiddlywiki/006916c1-7873-4933-b8ae-715f6259e8a0%40googlegroups.com > > <https://groups.google.com/d/msgid/tiddlywiki/006916c1-7873-4933-b8ae-715f6259e8a0%40googlegroups.com?utm_medium=email&utm_source=footer> > . > > > -- You received this message because you are subscribed to the Google Groups "TiddlyWiki" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/tiddlywiki/649711e4-8fd5-4e16-bb86-ee827328bdb5%40googlegroups.com.
