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Add Functions!RestrictPred (Filter) #81

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lemmy opened this issue Oct 28, 2022 · 0 comments
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Add Functions!RestrictPred (Filter) #81

lemmy opened this issue Oct 28, 2022 · 0 comments
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enhancement New feature or request

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lemmy commented Oct 28, 2022 

RestrictPred(f, Test(_)) ==
    Restrict(f, { x \in DOMAIN f : Test(x) })

Could also be named Filter to align with map and fold known to functional programmers, but then we already have Restrict.
@muenchnerkindl muenchnerkindl mentioned this issue Oct 30, 2022
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lemmy pushed a commit that referenced this issue Nov 1, 2022
@muenchnerkindl
Function restriction based on a test predicate (#82)
489852f 
Add Functions!Restrict(Domain|Values).

Addresses Github issue #81
#81

[Feature]
@lemmy lemmy added the enhancement New feature or request label Nov 1, 2022
@lemmy lemmy closed this as completed Nov 1, 2022
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