[GHC] #9099: Add strict fmap
#9099: Add strict fmap -------------------------------------------+------------------------------- Reporter: quchen | Owner: Type: feature request | Status: new Priority: normal | Milestone: Component: None | Version: 7.8.2 Keywords: | Operating System: Architecture: Unknown/Multiple | Unknown/Multiple Difficulty: Easy (less than 1 hour) | Type of failure: Blocked By: | None/Unknown Related Tickets: | Test Case: | Blocking: -------------------------------------------+------------------------------- Add a strict version of fmap to the standard libraries. {{{ infixl 4 <$!> (<$!>) :: Monad m => (a -> b) -> m a -> m b f <$!> m = do x <- m return $! f x {-# INLINE (<$!>) #-} }}} Libraries discussions: Take 1: http://www.haskell.org/pipermail/libraries/2013-November/021728.html Take 3: http://www.haskell.org/pipermail/libraries/2014-April/022864.html -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9099> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler
#9099: Add strict fmap -------------------------------+------------------------------------------- Reporter: quchen | Owner: Type: feature | Status: patch request | Milestone: Priority: normal | Version: 7.8.2 Component: | Keywords: libraries/base | Architecture: Unknown/Multiple Resolution: | Difficulty: Easy (less than 1 hour) Operating System: | Blocked By: Unknown/Multiple | Related Tickets: Type of failure: | None/Unknown | Test Case: | Blocking: | -------------------------------+------------------------------------------- Changes (by bernalex): * cc: hvr, ekmett (added) * status: new => patch * component: None => libraries/base -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9099#comment:1> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler
#9099: Add strict fmap -------------------------------+------------------------------------------- Reporter: quchen | Owner: Type: feature | Status: patch request | Milestone: Priority: normal | Version: 7.8.2 Component: | Keywords: libraries/base | Architecture: Unknown/Multiple Resolution: | Difficulty: Easy (less than 1 hour) Operating System: | Blocked By: Unknown/Multiple | Related Tickets: Type of failure: | None/Unknown | Test Case: | Blocking: | -------------------------------+------------------------------------------- Comment (by ekmett): No objection here. It also passed unanimously through the libraries@ proposal process. -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9099#comment:2> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler
#9099: Add strict fmap -------------------------------+------------------------------------------- Reporter: quchen | Owner: Type: feature | Status: patch request | Milestone: Priority: normal | Version: 7.8.2 Component: | Keywords: libraries/base | Architecture: Unknown/Multiple Resolution: | Difficulty: Easy (less than 1 hour) Operating System: | Blocked By: Unknown/Multiple | Related Tickets: Type of failure: | None/Unknown | Test Case: | Blocking: | -------------------------------+------------------------------------------- Comment (by Herbert Valerio Riedel <hvr@…>): In [changeset:"0148a1c416e42a7d7c9ff3624a0640963bfe0012/ghc"]: {{{ #!CommitTicketReference repository="ghc" revision="0148a1c416e42a7d7c9ff3624a0640963bfe0012" Add strict ver. of (<$>): (<$!>) to Control.Monad A strict (<$>) has been proposed numerous times. The first time around[1] by Johan Tibell, and the last time around[2] by David Luposchainsky. David's thread was able to avoid The Bikeshed Monster, and his (<$!>) proposal received unanimous +1s all around. This addresses #9099. [1]: http://www.haskell.org/pipermail/libraries/2013-November/021728.html [2]: http://www.haskell.org/pipermail/libraries/2014-April/022864.html Authored-by: Alexander Berntsen <alexander@plaimi.net> Signed-off-by: Herbert Valerio Riedel <hvr@gnu.org> }}} -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9099#comment:3> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler
#9099: Add strict fmap -------------------------------+------------------------------------------- Reporter: quchen | Owner: Type: feature | Status: closed request | Milestone: Priority: normal | Version: 7.8.2 Component: | Keywords: libraries/base | Architecture: Unknown/Multiple Resolution: fixed | Difficulty: Easy (less than 1 hour) Operating System: | Blocked By: Unknown/Multiple | Related Tickets: Type of failure: | None/Unknown | Test Case: | Blocking: | -------------------------------+------------------------------------------- Changes (by tibbe): * status: patch => closed * resolution: => fixed -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9099#comment:4> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler
#9099: Add strict fmap -------------------------------------+------------------------------------- Reporter: quchen | Owner: Type: feature request | Status: closed Priority: normal | Milestone: 7.10.1 Component: libraries/base | Version: 7.8.2 Resolution: fixed | Keywords: report- Operating System: Unknown/Multiple | impact Type of failure: None/Unknown | Architecture: Blocked By: | Unknown/Multiple Related Tickets: | Test Case: | Blocking: | Differential Revisions: -------------------------------------+------------------------------------- Changes (by hvr): * keywords: => report-impact * milestone: => 7.10.1 -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9099#comment:5> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler
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