[!has[draft.of]tag[task]!tag[done]sort[created]]
This means
!has = doesn't have (exclamation mades the filter step the opposite of what
it would be otherwise
draft.of = draft tiddlers, those which have not been saved are drafts.
So the first bit is "doesn't have draft" or isn't a draft
tag [task] = has the tag "task"
!tag[done] = doesn't have the tag "done"
sort [created] = sort the results in the order they were created.
The filter is like a sentence.
Filter out the following tiddlers from all the tiddlers in the TiddlyWiki:
dont include those which are drafts, do include those tagged as "task" but
don't include those which are tasks which are done, then sort them, in the
order in which they were created
-----
There are filters;
1. has
2. tag
3. sort
and they can be negated by the prefix "!"
Filters have operands, these are a value that tells the filter what to do.
-----
On 9 February 2016 at 00:37, 'Mark S.' via TiddlyWiki <
tiddlywiki@googlegroups.com> wrote:
> Go to tiddlywiki.com. Type "filter" into the search box. Start out by
> looking at "Filters", "Introduction to filter notation" and "Filter
> operators".
>
> In this case the filter is removing anything that is currently being
> edited (!has[draft.of]), then finding only those items that are tasks (
> tag[task]), then those task items that are undone (!tag[done]), and
> finally sorting everything by tiddler creation date. (sort[created]).
> Note that the exclamation mark ("!") means that items matching the
> following expression are NOT included in the results.
>
> HTH
> Mark
>
> On Monday, February 8, 2016 at 4:06:58 PM UTC-8, Phat Ky wrote:
>>
>> Hi all,
>> I have been using tiddlywiki for about 1 week and love it!
>> Right now, I am starting to explore code.
>> For example, I am studying the following piece of code:
>>
>> -------------------------
>> <$list filter="[!has[draft.of]tag[task]!tag[done]sort[created]]">
>>
>> <$checkbox tag="done"> <$link to={{!!title}}><$view
>> field="title"/></$link></$checkbox>
>>
>> </$list>
>> --------------------------
>> So, the part of the code highlighted in red (see above), I don't
>> understand it.
>> Been looking around to get help so I can understand what it means.
>>
>> Can someone please point me to information that can explain this bit of
>> code?
>>
>> Thanks,
>> Ky
>>
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