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Update Reflexivity law of Ord #301

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@JamieBallingall JamieBallingall commented Oct 18, 2022

Description of the change

Fixes #300 by updating the Reflexivity law of Ord to read:

-- | - Reflexivity: if `a == b` then `a <= b`

which better connects Ord to Eq and eliminates an unintuitive case as described in the issue.


Checklist:

  • Added the change to the changelog's "Unreleased" section with a reference to this PR (e.g. "- Made a change (#0000)")
  • Linked any existing issues or proposals that this pull request should close
  • Updated or added relevant documentation
  • Added a test for the contribution (if applicable)

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Ord: Reflexivity law is wrong?
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