Substituted Attribute Values

[atronoush]

The Substituted Attribute Values introduced in TiddlyWiki 5.3.0.

It is very powerful and saves one for writing extra macros, variables, but it has got less attention. I like to ask for sharing your examples here to see where and how we can use this feature.

[TW_Tones]

@atronoush this is a valuable subject you raise. I have being working on the more general question of substitution as a whole, rather than specifically the new backtick forms of substitution which is only one way to go about it.

• The key observation so far for me is only the first value will returned.
• Although if you wanted to pass a list into an attribute you can use join and or the new substitute operator.

However I am finding I am getting the most value from the new functions, see here How to set a tiddly field with the output of a macro call - #4 by TW_Tones

[atronoush]

I found this interesting thread:

New Features in TiddlyWiki 5.3.0: Substitution for Widget Attributes

Example 4: Use of backtick substitution Instead of filter transclusion you can use the backtick to substitute variables, literals, parameters, etc. Open: https://tiddlywiki5-dbkddgbfj-jermolene.vercel.app/ Create a new tiddler with below example <$let color="aqua red blue orange purple Teal yellow magenta green" nTids={{{ [enlist<color>count[]] }}} > <$list filter="[tag[Learning]first<nTids>]" counter=n> <span style=`color: ${ [enlist<color>nth<n>] }$`> <$text text=<<currentTidd…

[pmario]

@atronoush

I like to ask for sharing your examples here to see where and how we can use this feature.

The main reason for its implementation is pretty much described in the examples. It’s needed to simplify the creation of external links using variables.

It’s related to the substitute-operator

As so often. It depends on the use-case.

[TW_Tones]

Keep in mind the OT was focused on the use of the back tick forms of attribute value.

If I need to join values from different sources such as strings fields and variables I find the back tick method suitable for once off applications like a tool tip.

However if the result is something I want to use more than once I move it into a function with a meaningful name.