#13811: eta reduction in GHCi for an educational purpose -------------------------------------+------------------------------------- Reporter: vanto | Owner: (none) Type: feature | Status: new request | Priority: normal | Milestone: Component: GHCi | Version: 8.0.2 Keywords: | Operating System: Unknown/Multiple Architecture: | Type of failure: None/Unknown Unknown/Multiple | Test Case: | Blocked By: Blocking: | Related Tickets: Differential Rev(s): | Wiki Page: -------------------------------------+------------------------------------- Hello,\\ Is it possible to have in GHCi an eta reduction of an expression for an educational purpose?\\ We would have access by typing a command like this on the line {{{:eta reduction <expr>}}} with the following annotation {{{show the eta reduction of <expr>}}} in short {{{:er <expr>}}}.\\ example:\\ {{{ Prelude> length xs = foldl (\n _ -> n+1) 0 xs Prelude> :eta reduction length --or :er length length = foldl (\n _ -> n+1) 0 }}} -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/13811 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler