Hi, Am Dienstag, den 19.12.2017, 13:44 +0100 schrieb Andreas Abel:
+1 for "disjoint".
+1
I think "overlaps" falls below the Fairbairn threshold.
✓
I always wondered why there is a "notMember" function in the Set interface, saving us 3 key presses.
Probably because of use like this: filter (`notMember` seen) todo -- pretty vs. filter (not . (`member` seen)) todo -- too many parenthesis. Of course filter (\x -> not (x `member` seen)) todo -- is also ok And I will refrain from pointing out that with the idea of no-white- space-means-higher-precedence[1] would allow filter (not . `member`seen) todo -- too many parenthesis. [1] https://www.joachim-breitner.de/blog/730-Less_parentheses
One thing to consider: Data.Set should then also be equipped with a function "disjoint", to keep interfaces in sync.
✓ Cheers, Joachim -- Joachim Breitner mail@joachim-breitner.de http://www.joachim-breitner.de/