Hi sini-Kit The keep[] operator can be used for A intersect B -- in your usage you wished for a special condition -- that an intersect with an empty set is ignored (as you wished to simultaneously test fro the existence of the field.)
Your modification to the keep[] operator works in this instance, however, I'm unsure of whether this modification should be made to the operator in the general case (it could be offered as an option via a suffix) -- an intersect with an empty set should normally give an empty set. Thoughts anyone? regards On Tuesday, 23 February 2016 09:12:07 UTC+2, sini-Kit wrote: > > 2) TW5 don't have some useful features, and it will be great if I see them > in future versions. For example listops cam make A+B and A-B but cant make > A intersect B. It very strange, because as a rule we have 3 standard > Boolean operations. In TW5 we have onclick trigger only, but sometimes it > is no enough. > -- You received this message because you are subscribed to the Google Groups "TiddlyWiki" group. To unsubscribe from this group and stop receiving emails from it, send an email to tiddlywiki+unsubscr...@googlegroups.com. To post to this group, send email to tiddlywiki@googlegroups.com. Visit this group at https://groups.google.com/group/tiddlywiki. To view this discussion on the web visit https://groups.google.com/d/msgid/tiddlywiki/89a9d111-7bbf-45a5-92ad-e0e9cc29ddc2%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
