[GHC] #12402: Add fromLeft and fromRight to Data.Either
#12402: Add fromLeft and fromRight to Data.Either -------------------------------------+------------------------------------- Reporter: mettekou | Owner: Type: feature | Status: new request | Priority: normal | Milestone: Component: | Version: 8.0.1 libraries/base | Keywords: Data.Either, | Operating System: Unknown/Multiple fromLeft, fromRight | Architecture: | Type of failure: None/Unknown Unknown/Multiple | Test Case: | Blocked By: Blocking: | Related Tickets: Differential Rev(s): | Wiki Page: -------------------------------------+------------------------------------- This ticket is the result of [https://mail.haskell.org/pipermail/libraries/2016-June/027093.html the discussion of the proposal on the libraries mailing list] to add the following two functions to Data.Either in base: {{{#!hs fromLeft :: a -> Either a b -> a fromRight :: b -> Either a b -> b }}} The functions extract an {{{Either a b}}} value for the constructors in their namesake, providing their first argument as a default value for values created using the other constructor. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/12402 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler
#12402: Add fromLeft and fromRight to Data.Either -------------------------------------+------------------------------------- Reporter: mettekou | Owner: Type: feature request | Status: patch Priority: normal | Milestone: Component: libraries/base | Version: 8.0.1 Resolution: | Keywords: Data.Either, | fromLeft, fromRight Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Changes (by mettekou): * status: new => patch -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/12402#comment:1 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler
#12402: Add fromLeft and fromRight to Data.Either -------------------------------------+------------------------------------- Reporter: mettekou | Owner: Type: feature request | Status: patch Priority: normal | Milestone: Component: libraries/base | Version: 8.0.1 Resolution: | Keywords: Data.Either, | fromLeft, fromRight Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): D2403 Wiki Page: | -------------------------------------+------------------------------------- Changes (by mettekou): * differential: => D2403 -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/12402#comment:2 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler
#12402: Add fromLeft and fromRight to Data.Either -------------------------------------+------------------------------------- Reporter: mettekou | Owner: Type: feature request | Status: patch Priority: normal | Milestone: Component: libraries/base | Version: 8.0.1 Resolution: | Keywords: Data.Either, | fromLeft, fromRight Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Phab:D2403 Wiki Page: | -------------------------------------+------------------------------------- Changes (by mpickering): * differential: D2403 => Phab:D2403 -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/12402#comment:3 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler
#12402: Add fromLeft and fromRight to Data.Either -------------------------------------+------------------------------------- Reporter: mettekou | Owner: Type: feature request | Status: closed Priority: normal | Milestone: Component: libraries/base | Version: 8.0.1 Resolution: fixed | Keywords: Data.Either, | fromLeft, fromRight Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Phab:D2403 Wiki Page: | -------------------------------------+------------------------------------- Changes (by mettekou): * status: patch => closed * resolution: => fixed -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/12402#comment:4 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler
#12402: Add fromLeft and fromRight to Data.Either
-------------------------------------+-------------------------------------
Reporter: mettekou | Owner:
Type: feature request | Status: closed
Priority: normal | Milestone:
Component: libraries/base | Version: 8.0.1
Resolution: fixed | Keywords: Data.Either,
| fromLeft, fromRight
Operating System: Unknown/Multiple | Architecture:
| Unknown/Multiple
Type of failure: None/Unknown | Test Case:
Blocked By: | Blocking:
Related Tickets: | Differential Rev(s): Phab:D2403
Wiki Page: |
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Comment (by Ben Gamari
#12402: Add fromLeft and fromRight to Data.Either -------------------------------------+------------------------------------- Reporter: mettekou | Owner: Type: feature request | Status: closed Priority: normal | Milestone: 8.2.1 Component: libraries/base | Version: 8.0.1 Resolution: fixed | Keywords: Data.Either, | fromLeft, fromRight Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Phab:D2403 Wiki Page: | -------------------------------------+------------------------------------- Changes (by bgamari): * milestone: => 8.2.1 Comment: Thanks mettekou! -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/12402#comment:6 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler
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