#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: | -------------------------------------+------------------------------------- Comment (by maeder): Replying to [comment:32 Iceland_jack]: [...]
-- ex = λ (\x -> λ (\y -> x))
ex = λ \x -> λ \y -> x }}}
Would this parse?
{{{#!hs ex = λ\ x -> λ\ y -> x }}}
Surely, this is a lexical issue. No space is needed between symbols (like "\") and (unicode) letters (like x, y, or λ), although I recommend to always leave a space, i.e. "f λ\ ..." would be parsed as "(f λ)\ ...". -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/10843#comment:33 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler