Thanks for this Evan!
I was thinking of being able to use the if statement like this (in
semi-pseduo code)
IF( gt([all[tiddlers]get[modified]], add_days(date(now()),-5)), <<title>> +
"has
been recently modified")
And that would display all tiddlers who were recently modified. But as I
understand it, these arent really built to operate on arrays just yet - but
might be in the future.
Thanks again,
Diego
On Thursday, December 21, 2017 at 2:04:37 PM UTC-6, Evan Balster wrote:
>
> Hey, Diego —
>
> Using conditions to:
>
> - list / transclude
> - Both of these are a bit difficult because formula results aren't
> wikified right now.
> - You could have a formula result in a filter or tiddler and list
> or transclude that
> - <$list filter=<<formula "if (insert condition here,
> [tag[SomeTag]], [[mycondition is false]]">> > {{!!title}}... </$list>
> - use a macro
> - Zero-argument macros can be used directly in formulas
> - It's tougher for macros with arguments, until I add support for
> those
> - show some text
> - (= if (insert condition here, "text to show when condition is
> true", "") =)
> - set a variable
> - Set a variable based on a condition
> - <$formula-vars varToSet="if (insert condition here, "true-value",
> "false-value")"> <<varToSet>>... </$formula-vars>
> - set a field
> - Changing fields will usually involve a $button widget and an
> $action-setfield widget inside that whose arguments include formulas.
> I
> use this myself for auto-calculation of tiddler fields and might make
> an
> example of this later.
>
>
> Here are a few examples doing some fancy calculations with the current
> plugin:
>
> - Math & Tabulation
> -
> http://evanbalster.com/tiddlywiki/formulas.html#Demo%3A%20Tabulator
> - Interactive SVG Visualizations
> -
>
> http://evanbalster.com/tiddlywiki/explorables.html#Demo%3A%20Real%20Projective%20Line
> -
>
> http://evanbalster.com/tiddlywiki/explorables.html#Demo%3A%20Harmonic%20Lattice
> -
> http://evanbalster.com/tiddlywiki/formulas.html#Demo%3A%20Starburst
>
>
> On Thursday, 21 December 2017 13:46:57 UTC-6, Diego Mesa wrote:
>>
>> Hey Evan,
>>
>> Im more and more impressed with this plugin, the more I use it. If anyone
>> has some time and has already come up with cool examples, can you share?
>> Also, Im interested in answering each of Tony's points from his earlier
>> question:
>>
>> Evan,
>>> Please forgive my Ignorance; What can a and b be equal to in Formulas'
>>> logical functions, like IF and IFS?
>>> I am thinking if something evaluates to true how do I use this to
>>>
>>> - list
>>>
>>>
>>> - transclude
>>>
>>>
>>> - Use macro
>>>
>>>
>>> - Show some text etc...
>>>
>>>
>>> - Set a variable/field
>>>
>>>
>>> I imagine there is a way to write a list filter if a formula it true to
>>> show when true (or False) etc...
>>> I expect knowing this may help the less sophisticated users (still me at
>>> this point) make use of formula.
>>> Thanks in Advance
>>> Tony
>>
>>
>>
>> with specific examples. If anyone has any that would be great!
>>
>> Best,
>> Diego
>>
>>
>>
>> On Wednesday, December 20, 2017 at 9:40:21 PM UTC-6, Evan Balster wrote:
>>>
>>> Hey, Tony —
>>>
>>> I'm aware of the ordinary "de-duplication" behavior. In this case, it
>>> was happening even with filter operators that would normally allow
>>> duplication, like "get". This was because of a poorly-implemented
>>> optimization I'd written to reduce compilation overhead during filter
>>> processing. Behavior is now consistent with typical filter operations.
>>>
>>> The unusual behavior of TiddlyWiki's "get" operator is pretty important
>>> if you're doing something like summing up a bunch of "quantity" fields
>>> where many hold values like 1 or 2.
>>>
>>> On Wednesday, 20 December 2017 21:17:40 UTC-6, TonyM wrote:
>>>>
>>>> Evan,
>>>>
>>>> What you considered a Bug is a feature, because Titles are unique in
>>>> TiddlyWiki so if you have two of the same name appear such as in when
>>>> Tagged A, or B Or A and B we want the list of titles to be
>>>> "de-duplicated",
>>>> Of course when you use filters from non title sources we do not want this
>>>> occurring. As you found.
>>>>
>>>> How did you address this? (details not necessary), I presume its only
>>>> in formulae and not when you are filtering titles?
>>>>
>>>> Best wishes
>>>> Tony
>>>>
>>>> On Thursday, 21 December 2017 14:05:37 UTC+11, Evan Balster wrote:
>>>>>
>>>>> *Formulas version 0.1.5*:
>>>>> https://evanbalster.com/tiddlywiki/formulas.html
>>>>> GitHub & issue tracking:
>>>>> https://github.com/EvanBalster/TiddlyWikiFormula
>>>>>
>>>>> - Duplicate values in filters are now handled correctly.
>>>>>
>>>>>
>>>>> On Wednesday, 20 December 2017 20:04:57 UTC-6, Evan Balster wrote:
>>>>>>
>>>>>> *General warning*: There is a bug in filter processing that
>>>>>> prevents filters in formulas from returning duplicate values. This is
>>>>>> likely to cause trouble with formulas like sum([tag[Expense]get[value]])
>>>>>> if
>>>>>> two Expenses have the same value.
>>>>>>
>>>>>> This bug appears to have existed since the first release.
>>>>>>
>>>>>> I've got an incentive to fix this one quickly, so I might be patching
>>>>>> this tonight.
>>>>>>
>>>>>> On Wednesday, 20 December 2017 19:53:59 UTC-6, Evan Balster wrote:
>>>>>>>
>>>>>>> Hey, TonyM —
>>>>>>>
>>>>>>> Are you formatting a lot of dates using the year/month/day
>>>>>>> functions? If so, you'll probably have better luck with the text
>>>>>>> conversion function T() and setting a dateFormat. See the
>>>>>>> documentation
>>>>>>> for the FormulaWidget for more information on date format strings
>>>>>>> (which
>>>>>>> use the same rules as in TiddlyWiki's settings).
>>>>>>>
>>>>>>> On Wednesday, 20 December 2017 19:31:53 UTC-6, TonyM wrote:
>>>>>>>>
>>>>>>>> Evan,
>>>>>>>>
>>>>>>>> Once again for you great work. I have started playing with the date
>>>>>>>> related functions and finding it a little complex using Make a
>>>>>>>> date from a TiddlyWiki timestamp and return.
>>>>>>>>
>>>>>>>> Is there any way to make this more direct or can you suggest a
>>>>>>>> pattern to follow if all my dates are TiddlyWiki timestamps?
>>>>>>>>
>>>>>>>> PS I have many dates in one tiddler so it get unwieldy.
>>>>>>>>
>>>>>>>> Thanks in advance
>>>>>>>> Tony
>>>>>>>>
>>>>>>>>
>>>>>>>> On Thursday, 21 December 2017 11:31:49 UTC+11, Evan Balster wrote:
>>>>>>>>>
>>>>>>>>> *Formulas version 0.1.4*:
>>>>>>>>> https://evanbalster.com/tiddlywiki/formulas.html
>>>>>>>>> GitHub & issue tracking:
>>>>>>>>> https://github.com/EvanBalster/TiddlyWikiFormula
>>>>>>>>>
>>>>>>>>> - Add text conversion functions:
>>>>>>>>> - t, value, textjoin
>>>>>>>>> - Add text utility functions:
>>>>>>>>> - len, exact, mid, substitute, split, trim
>>>>>>>>> - Add regular expression functions:
>>>>>>>>> - regexreplace, regexmatch, regexextract, regexextract1.
>>>>>>>>> - Add julian day / date conversion functions:
>>>>>>>>> - julian, to_julian
>>>>>>>>> - Fix off-by-one error in month function
>>>>>>>>> - Fix error in if function, disable if function pending
>>>>>>>>> support for more powerful function construction
>>>>>>>>> - Fix errors in count and counta functions.
>>>>>>>>> - Code cleanup
>>>>>>>>>
>>>>>>>>> New features are documented in the wiki.
>>>>>>>>>
>>>>>>>>> The strings and regex work were driven by my own needs with a data
>>>>>>>>> archiving project.
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> On Wednesday, 20 December 2017 10:18:20 UTC-6, @TiddlyTweeter
>>>>>>>>> wrote:
>>>>>>>>>>
>>>>>>>>>> Dear Evan
>>>>>>>>>>
>>>>>>>>>> Thank you for adding that simple demo. It really helped me better
>>>>>>>>>> understand how to use the plugin and make steps towards what I need!!
>>>>>>>>>>
>>>>>>>>>> Best wishes
>>>>>>>>>> Josiah
>>>>>>>>>>
>>>>>>>>>> Evan Balster wrote:
>>>>>>>>>>>
>>>>>>>>>>> Released version 0.1.2:
>>>>>>>>>>> http://evanbalster.com/tiddlywiki/formulas.html
>>>>>>>>>>> ...
>>>>>>>>>>> * Added badger inoculation simulator
>>>>>>>>>>> <http://evanbalster.com/tiddlywiki/formulas.html#Demo%3A%20Tabulator>
>>>>>>>>>>>
>>>>>>>>>>> for @TiddlyTweeter (still lacks month automation, though)
>>>>>>>>>>>
>>>>>>>>>>
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