removed redundant use of with
#1947
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cf. issue #1937
UPDATED: these are several of the more egregious 'gratuitous' uses of
within stdlib. I haven't (and won't, on this iteration) attempted to be systematic in replacing use ofwithon a Boolean argument in favour ofif_then_else_,nor those where they are used essentially asbut now I have where (at the bare minimum) an irrefutable pattern with a variable would be more (cognitively) efficient.let-bindings,The one 'noteworthy' instance here concerns
scanr, where a reordering of the (nested) with patterns permitted elimination of the dead branch completely in favour of an irrefutable_∷_pattern.No
CHANGELOG: only the proofs of existing lemmas have been modified.