Accessing a dictionary entry from a list

[Stephen Kimmel]

Per my usual, I'm fairly certain that this is easy... I just can't figure it out.

I have a lot of tiddlers named with the stock symbol. The tiddler for Ford is named F, for example. while the tiddler for Disney is named DIS. I want to create a data/dictionary tiddler called pricetiddler that will have the stock marker tickers symbols and the prices. So the data tiddler might look like :

APPL:175.07

DIS:103.13

F:10.51

MSFT:92.87

I want this in a dictionary tiddler so I can change all the numbers in one shot rather than changing a field in each of the tiddlers individually. Finally I want to create lists using something like

 <$list filter="[tag[computer]sort[title]]" variable="stock">
<<stock>> price = ${{pricetiddler##<<stock>>}}

</$list>


and create a list like:



APPL price = $175.07
MSFT price = $92.87


So far, no combination of symbols has given me what I want. Can someone tell me what I'm missing?


[Mark S.]

Whenever you want to concatenate something, like the result of a variable and a tiddler name, think of macros -- that's mainly what they do. This script seems to work:

\define price() {{pricetiddler##$(stock)$}}

<$list filter="[tag[computer]sort[title]]" variable="stock">

<<stock>> price = $<<price>>

</$list>

HTH
-- Mark

[Stephen Kimmel]

Many thanks.

Sure enough that's what I needed and as I expected it was simple enough. The $(name)$ was the combination I hadn't tried. Perhaps it isn't the best documented aspect of Tiddlywiki.

Again, thanks.

Stephen