10th February 2015 at 4:16pm
| purpose | select one of each group of input titles by date |
|---|---|
| input | a selection of titles |
| parameter | F=the name of a date field, defaulting to modified |
| output | a selection containing the first input title encountered for each distinct value (ignoring times of day) of field F |
Learn more about how to use Filters
Each input title is processed in turn. The value of field F in the corresponding tiddler is examined, and as long as this indicates a date that has not been encountered before, the title is appended to the output.
If a tiddler doesn't contain field F, it contributes nothing to the output.