[GHC] #10843: Allow do blocks without dollar signs as arguments
GHC
ghc-devs at haskell.org
Thu Jul 14 16:57:17 UTC 2016
#10843: Allow do blocks without dollar signs as arguments
-------------------------------------+-------------------------------------
Reporter: agibiansky | Owner: agibiansky
Type: feature request | Status: new
Priority: normal | Milestone:
Component: Compiler | Version: 7.10.2
(Parser) |
Resolution: | Keywords:
Operating System: Unknown/Multiple | Architecture:
| Unknown/Multiple
Type of failure: None/Unknown | Test Case:
Blocked By: | Blocking:
Related Tickets: #11706 | Differential Rev(s): Phab:D1219
Wiki Page: |
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Comment (by Iceland_jack):
Lambda motivation
{{{#!hs
-- phoas :: Phoas v (x -> y -> x)
-- phoas = PLam (\x -> PLam (\y -> PVar x))
phoas :: Phoas v (x -> y -> x)
phoas = PLam \x -> PLam \y -> PVar x
}}}
{{{#!hs
-- ex = λ (\x -> λ (\y -> x))
ex = λ \x -> λ \y -> x
}}}
Would this parse?
{{{#!hs
ex = λ\ x -> λ\ y -> x
}}}
--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/10843#comment:32>
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