#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 Iceland_jack): Replying to [comment:33 maeder]:
Replying to [comment:32 Iceland_jack]: 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)\ ...".
I was wondering if we could mimic the upper-case lambda `Λ` by using a lower-case `l` for lambda {{{#!hs ex' = l\ x -> l\ y -> x }}} `l\` look like a malformed lambda! (don't) -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/10843#comment:34 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler