#3544: Add instance IsString ShowS where fromString = showString
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Reporter: basvandijk | Owner:
Type: proposal | Status: new
Priority: normal | Component: libraries/base
Version: 6.10.4 | Severity: normal
Keywords: | Testcase:
Os: Unknown/Multiple | Architecture: Unknown/Multiple
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It would be really nice to use
[http://www.haskell.org/ghc/docs/latest/html/users_guide/type-class-
extensions.html#overloaded-strings OverloadedStrings] when writing a
definition of
[http://haskell.org/ghc/docs/latest/html/libraries/base/Prelude.html#v:showsPrec
showsPrec] in an instance for Show.
The attached patch adds the necessary instance to {{{base/GHC/Show.lhs}}}:
{{{
instance IsString ShowS where
fromString = showString
}}}
Note that this does require {{{TypeSynonymInstances}}}.
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/3544>
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