Folks,
I am working on a report generator and realised I may like to sort on more
than one parameter eg state then region
I konw how to do as much with nested lists but what if the sort operator
supported it?
I am not so sure if it would be difficult or not to implement but It may
look like this
sourcelist +[sort{!!state}] +[sort:subsort{!!region}]
Or another form of annotation
The idea would be to first sort the list by state, then within Each" value
of state sort it by region
Ideally we could then sort again N times, here I use a subsort operator so
we are free to provide some flags
sourcelist +[sort{!!state}] +[subsort{!!region}] +[subsort[title]]
or a flag could be used on each of the sort types eg +[nsort:subsort<var>]
*Why?*
- Tiddlywiki is about lists, and sorting an important feature.
- Filters are our title handlers and are used to generate lists
- There have being calls for intermediate values in filters but perhaps
one reason is to group and subgroup rather than use multiple list widgets.
- Filters acting on lists are not dissimilar to 4th Generation report
languages,
most have the ability to group in the listing mechanism.
Thanks for your consideration
Regards
Tony
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