package batteries

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A community-maintained standard library extension

Install

dune-project
 Dependency

Authors

Maintainers

Sources

batteries-3.10.0.tar.gz
md5=b7f3b99f12f21b1da6b6aa13d993206d
sha512=8b7f2479eb0271bcfd9168887c1e4a9a815c512eab3ee61b150fc4dfa9ec803e4f73115155f20b3017e4a822148d0e6d1c1e8e5f96790fd691b419dd39a908a2

doc/batteries.unthreaded/BatOrd/Incubator/index.html

Module BatOrd.IncubatorSource

Sourceval eq_by : ('a -> 'b) -> 'a eq
Sourceval comp_by : ('a -> 'b) -> 'a comp
Sourceval ord_by : ('a -> 'b) -> 'a ord

Build a eq, cmp or ord function from a projection function. For example, if you wanted to compare integers based on their lowest 4 bits, you could write let cmp_bot4 = cmp_by (fun x -> x land 0xf) and use cmp_bot4 as the desired integer comparator.