30 May
2001
30 May
'01
9:25 p.m.
Zhanyong Wan writes: | Tom Pledger wrote: : | > deleteBy'' f = filter (not . f) | | No. deleteBy' f only deletes the *first* element that satisfies the | predicate f, while filter (not . f) deletes *all* such elements. Oops. Sorry. I ought to become less SQL-oriented...