Hey, Diego —
Yes, that kind of logic is a ways off yet and would likely need to be done
with a for-loop like construct.
For now, you'll need to construct it using the $list widget, like this;
Recently modified:
<$list filter="[all[tiddlers]]">
(= if(days(tw_date({{!!modified}}), now())<2, {{!!title}}&", ", "") =)
</$list>
The fact that the output isn't wikified is pretty disadvantageous here, as
it means you add <br/>...
On Thursday, 21 December 2017 14:24:23 UTC-6, Diego Mesa wrote:
>
> Thanks for this Evan!
>
> I was thinking of being able to use the if statement like this (in
> semi-pseduo code)
>
> IF( gt([all[tiddlers]get[modified]], add_days(date(now()),-5)), <<title>>
> + "has been recently modified")
>
> And that would display all tiddlers who were recently modified. But as I
> understand it, these arent really built to operate on arrays just yet - but
> might be in the future.
>
> Thanks again,
> Diego
>
> On Thursday, December 21, 2017 at 2:04:37 PM UTC-6, Evan Balster wrote:
>>
>> Hey, Diego —
>>
>> Using conditions to:
>>
>> - list / transclude
>> - Both of these are a bit difficult because formula results aren't
>> wikified right now.
>> - You could have a formula result in a filter or tiddler and list
>> or transclude that
>> - <$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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