Haskellers are usually familiar with monoids and semigroups. A monoid has an appending operation <> (or mappend), and an identity element, mempty. A semigroup has an appending <> operation, but does not require a mempty element. A Semiring has two appending operations, plus and times, and two respective identity elements, zero and one. More formally, a Semiring R is a set equipped with two binary relations + and *, such that: - (R,+) is a commutative monoid with identity element 0, - (R,*) is a monoid with identity element 1, - (*) left and right distributes over addition, and multiplication by '0' annihilates R.
OS | Architecture | Version |
---|---|---|
NetBSD 10.0 | aarch64 | hs-semirings-0.6nb5.tgz |
NetBSD 10.0 | aarch64 | hs-semirings-0.6nb4.tgz |
NetBSD 10.0 | aarch64 | hs-semirings-0.6nb4.tgz |
NetBSD 10.0 | x86_64 | hs-semirings-0.6nb5.tgz |
NetBSD 10.0 | x86_64 | hs-semirings-0.6nb4.tgz |
NetBSD 10.0 | x86_64 | hs-semirings-0.6nb4.tgz |
NetBSD 10.0 | x86_64 | hs-semirings-0.6nb5.tgz |
NetBSD 9.0 | aarch64 | hs-semirings-0.6nb5.tgz |
NetBSD 9.0 | aarch64 | hs-semirings-0.6nb4.tgz |
NetBSD 9.0 | aarch64 | hs-semirings-0.6nb4.tgz |
NetBSD 9.0 | x86_64 | hs-semirings-0.6nb5.tgz |
NetBSD 9.0 | x86_64 | hs-semirings-0.6nb4.tgz |
NetBSD 9.0 | x86_64 | hs-semirings-0.6nb4.tgz |
NetBSD 9.0 | x86_64 | hs-semirings-0.6nb5.tgz |
NetBSD 9.3 | x86_64 | hs-semirings-0.6nb5.tgz |
NetBSD 9.3 | x86_64 | hs-semirings-0.6nb5.tgz |
Binary packages can be installed with the high-level tool pkgin (which can be installed with pkg_add) or pkg_add(1) (installed by default). The NetBSD packages collection is also designed to permit easy installation from source.
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