Split Semiring into Semiring and Dioid

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5/5
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新手友好度
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backend

研究方向

The proposal concerns the Semiring type class in purescript-prelude; start by reading its current definition and the five comments on this issue. The discussion asks whether to move zero and one into Dioid, but does not settle the design or name affected files. Done would require a decided design and agreement on how the breaking change and biproduct generalization should work.

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描述

From @mikesol in Discord:

Would it make sense to revamp Semiring so that it had only the operators add and mul and then use Dioid for zero and one? There is some precedent for that: https://en.m.wikipedia.org/wiki/Semiring. It would create a nice symmetry between semigroup/monoid/group and semiring/dioid/ring. It'd be a breaking change for folks using zero and one, but otherwise I think it wouldn't be too disruptive. Also, it would allow for the generalization of semiring to an analogous biproduct class, which now isn't possible because zero and one necessarily leave out all but one of the types in the biproduct or biCCC class. Thoughts?

主要語言
PureScript
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168
分支
90
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3 天 1 小時
30 天內合併 PR
1

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  • 沒有 Dockerfile 或 Docker Compose 檔案
  • 有 Pull Request 範本
  • 沒有貢獻指南

從這裡開始

  1. 先讀完整個 Issue，再讀專案的貢獻指南。
  2. 在 Issue 下留言說明你要接手 —— 這能避免兩個人做同樣的事。
  3. Fork 儲存庫，在一個分支上完成修改。
  4. 送出 Pull Request，並在描述裡引用這個 Issue 編號。

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