There are other ways we could add maths to TW5 (including @EvanBalster's awesome https://github.com/EvanBalster/TiddlyWikiFormula) but the approach here has the merit of simplicity because it reuses the existing filter evaluation mechanism. That means that it's not ordinary "2+2" maths, it's a unique list processing language...
Docs to come
Fixes#254
* Refactored the is operator for simplicity and efficiency.
* Improve `is` filter documentation.
* Update is.js
* extracted `subops.length` to `num_of_subops`
* renamed `subop` to `operator` for clarity/differentiation from `subops`
* refactored to avoid using a `Set` object.
* Update is.js
* Modify the is operator to allow multiple types to be specified.
* Fixed indentation.
* Fixed indentation.
* Rewritten to maintain input order when multiple filters provided.
* Updated documentation.
* Update is.tid
* fixed the "0 is not a number bug" in listops and x-listops
* Fixed one comment
* "default" is not a good name for a variable
* Following code styles.
Moving getInt to utils.
* Removing unwanted spaces introduced by me
Spending a bit more time with Chrome dev tools, and further to 254e1ca, this optimisation reduces the rendering time for the sample TOC from 1.9s to about 0.9s...
I used this test:
console.time();for(var t=0; t<200; t++)
{$tw.wiki.filterTiddlers("[all[tiddlers+shadows]sameday[20170210]]");};c
onsole.timeEnd()
Before this patch, I got speeds of approx 190ms, versus 140ms
afterwards.
Note that the ability to add a cache property like this is only
possible because tiddler objects are immutable.
given a list `A B C D` if I run `A B C D +[move:-1 [A]]` I get `B C A D`. However, if I were to do `A B C D +[move:1[D]]` it doesn't wrap around, and I get `A B C D`. This fixes that such that `A B C D +[move:-1 [A]]` gives 'A B C D`
* return all wikiparserrules w/o operand
* simpler layout & code / updated instruction details
Also wanted to link each rule to the official docs using a dictionary at
`$:/language/Docs/ParserRules/`. However, without #2194 this is not
doable.
* Change the negation logic to address an edge case
Make it possible to get an interval ending with yesterday or starting with tomorrow.
* "days" filter: adjust documentation
