[GHC] #10814: Eliminate some ambiguity for IsString [a]
#10814: Eliminate some ambiguity for IsString [a] -------------------------------------+------------------------------------- Reporter: dolio | Owner: ekmett Type: task | Status: new Priority: normal | Milestone: 7.12.1 Component: Core | Version: 7.10.2 Libraries | Keywords: | Operating System: Unknown/Multiple Architecture: | Type of failure: None/Unknown Unknown/Multiple | Test Case: | Blocked By: Blocking: | Related Tickets: Differential Revisions: | -------------------------------------+------------------------------------- The libraries list resolved to make a modification to the `String` instance for `IsString` to resolve certain ambiguous cases. One example is: {{{#!hs "hello" ++ " world" }}} This case can be resolved by making the instance: {{{#!hs instance (a ~ Char) => IsString [a] where ... }}} rather than: {{{#!hs instance IsString [Char] where ... }}} as the former matches only based on the head being `[a]`, and subsequently determines `a ~ Char`, rather than only matching when other factors cause the head to be fully resolved to `[Char]`. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/10814 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler
#10814: Eliminate some ambiguity for IsString [a] -------------------------------------+------------------------------------- Reporter: dolio | Owner: dolio Type: task | Status: new Priority: normal | Milestone: 7.12.1 Component: Core Libraries | Version: 7.10.2 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Revisions: -------------------------------------+------------------------------------- Changes (by dolio): * owner: ekmett => dolio -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/10814#comment:1 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler
#10814: Eliminate some ambiguity for IsString [a] -------------------------------------+------------------------------------- Reporter: dolio | Owner: dolio Type: task | Status: new Priority: normal | Milestone: 8.0.1 Component: Core Libraries | Version: 7.10.2 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Phab:D1572 Wiki Page: | -------------------------------------+------------------------------------- Changes (by dolio): * cc: ekmett (added) * differential: => Phab:D1572 -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/10814#comment:3 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler
#10814: Eliminate some ambiguity for IsString [a] -------------------------------------+------------------------------------- Reporter: dolio | Owner: dolio Type: task | Status: new Priority: normal | Milestone: 8.0.1 Component: Core Libraries | Version: 7.10.2 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Phab:D1572 Wiki Page: | -------------------------------------+------------------------------------- Comment (by thomie): Discussed in this thread: https://mail.haskell.org/pipermail/libraries/2015-May/025741.html -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/10814#comment:4 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler
#10814: Eliminate some ambiguity for IsString [a]
-------------------------------------+-------------------------------------
Reporter: dolio | Owner: dolio
Type: task | Status: new
Priority: normal | Milestone: 8.0.1
Component: Core Libraries | Version: 7.10.2
Resolution: | Keywords:
Operating System: Unknown/Multiple | Architecture:
| Unknown/Multiple
Type of failure: None/Unknown | Test Case:
Blocked By: | Blocking:
Related Tickets: | Differential Rev(s): Phab:D1572
Wiki Page: |
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Comment (by Ben Gamari
#10814: Eliminate some ambiguity for IsString [a] -------------------------------------+------------------------------------- Reporter: dolio | Owner: dolio Type: task | Status: closed Priority: normal | Milestone: 8.0.1 Component: Core Libraries | Version: 7.10.2 Resolution: fixed | Keywords: Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Phab:D1572 Wiki Page: | -------------------------------------+------------------------------------- Changes (by bgamari): * status: new => closed * resolution: => fixed -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/10814#comment:6 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler
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