Folks, In this thread <https://groups.google.com/forum/?hl=en#!topic/tiddlywiki/kNJFU8w9Q_I> David asks how to generate a range of dates.
This made me ask myself what if we had an operator that given a date input of the standard TiddlyWiki form YYYYMMDD+ it was able to filter out invalid dates according to calendar rules That is if 20200229 or 20200229231215828 is filtered eg "is[validdate]" it would be passed through as there is a 29th of february this year. That is if 20210229 or 20210229231215828 would not be because there is no leap year in 2021 This may be a simple javascript date function already available in tiddlywiki. It would then become possible to do the following; <$list filter="[range[1,31]addprefix[202002]is[validdate]]"> </$list> to generate a list of February 2020 valid days of the month *I have not complicated the above with the need to zero fill the range value* >From this proposed filter it would be very easy to generate date ranges or test any YYYMMDD for validity This could as easily extend to time as well if required is[validtime] HHMMSS What do you think? Can someone help me make this so? Regards Tony -- You received this message because you are subscribed to the Google Groups "TiddlyWikiDev" group. To unsubscribe from this group and stop receiving emails from it, send an email to tiddlywikidev+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/tiddlywikidev/77f97b44-7211-4a5f-ab7a-b84753d1d07d%40googlegroups.com.
