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ekmett/lens

Code Issues 46 Pull requests 10 Projects 0 Wiki Pulse Graphs

Bugs Found

ekmett edited this page Jan 23, 2013 · 8 revisions

Pages 16

  • Home
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  • Bugs Found
  • Derivation
  • Evaluations
  • Examples
  • FAQ
  • History of Lenses
  • How can I write lenses without depending on lens?
  • Operators
  • Overview
  • Plated
  • Synonyms by Constraints
  • Tutorial
  • Types
  • Varying lens properties by instance
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We keep finding bugs in GHC as we develop lens.

I've started a rogues' gallery here:

  • RULES don't apply to a newtype constructor
  • Derived Foldable and Traversable instances become extremely inefficient due to eta-expansion
  • A strictness bug in ByteString
  • GHC doesn't optimize (strict) composition with id
  • unsafeCoerce without extensions
  • Exciting arity warnings can be triggered by the heavy use of lens in GHC 7.4.x and below.
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Providence Salumu