Question: how to produce a list of unique list items from a filter search?

[Hubert]

Hello,

Apologies for awkward phrasing in the title :) Here's what I mean, in code:

TiddlerTest1!!list = banana apple
TiddlerTest2!!list = banana

<$list filter="[all[tiddlers]search:title[TiddlerTest]has[list]]">
<$list filter="[list[!!list]]">

output: banana apple banana

</$list>
</$list>

The output I get is: banana apple banana

What I'm trying to get is: banana apple -- so, basically a list of unique list items.

I know that the problem here is that I have a "for loop" within a "for loop" (in Python speak) and no way of eliminating thus produced duplicates.

Could anyone suggest a fix to my lists that would produce a list of unique items?

Thank you in advance.

Regards,

Hubert

[Mat]

<$list filter="[all[tiddlers]prefix[TiddlerTest]get[list]]">

</$list>

I think this should be enough.

<:-)

[Hubert]

Mat, thanks simplifying the code.

Unfortunately, the output I get still contains duplicates.

I've tried "each" in the meantime as well, but still no luck.

Many thanks,

Hubert

[Mat]

Here's a... um... really awkward way that at least seems to work. I really hope this is not the best solution:

<$set name=foo filter="[all[tiddlers]prefix[New]get[list]]">
<$wikify name=bar text={{{ [<foo>] }}}>
<$list filter=<<bar>>>

</$list>
</$wikify>
</$set>

@Mark? @Eric? This feels like your hood.

<:-)

[Hubert]

Thanks Mat!

After experimenting some more with filters / reading the documentation, I was able to come up with a one-line filter expression that works:

<$list filter="[all[tiddlers]prefix[TiddlerTest]has[list]each:list-item[list]]">

</$list>

I guess the missing bit here was each:list-item, somewhat mysterious ;) but -- it works!

Thanks again,

-Hubert 

[TonyM]

Hubert;

Thanks for sharing back.

I expect the need to use each:list-item is because list fields can include the `[[ ]]` for tiddler titles containing spaces. If this were not so in your example the titles with spaces could get broken into pieces with mismatched "[[" and "]]" floating around.

Regards

Tony