#4076: Add Applicative instance for STM
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Reporter: basvandijk | Owner:
Type: proposal | Status: new
Priority: normal | Component: libraries/base
Version: 6.12.2 | Keywords:
Os: Unknown/Multiple | Testcase:
Architecture: Unknown/Multiple | Failure: None/Unknown
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I propose adding an `Applicative` instance for `STM`.
The first attached patch adds an `Applicative` instance for `STM` to
`base/GHC/Cons.lhs`.
Note I had to create a `base/Control/Applicative.hs-boot` file and import
`Applicative` using `{-# SOURCE #-}` because I got a "Module imports form
a cycle for modules" error.
The second attached patch adds an `Applicative` instance for the
sequential `STM` to: `stm/Control/Sequential/STM.hs`
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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/4076>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler
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