[Hugs-users] Re: Scoping inconsistency in ghci

[Ahn, Ki Yung]

Sorry this was my complete confustion (List.\\) is not same as List.(\\).

Ahn, Ki Yung 쓴 글:
> Running ghci without any option or scripts to load, I've experienced
> some inconsistencies prelude List.\\ and List.(\\) .  The former is in
> scope, but the latter is not.  This seem strange.  My expectation is
> that neither of them should be in scope unless we load the List module
> with with the :m command.
> 
> I'm using Debian distribution of GHC 6.10.4, and here is an example run
> of ghci to show this issue.
> 
> kyagrd at kyagrd:~/tmp$ ghci
> GHCi, version 6.10.4: http://www.haskell.org/ghc/  :? for help
> Loading package ghc-prim ... linking ... done.
> Loading package integer ... linking ... done.
> Loading package base ... linking ... done.
> Prelude> [1,2,3,4] List.\\ [1,3]
> [2,4]
> Prelude> List.(\\) [1,2,3,4] [1,3]
> 
> <interactive>:1:0: Not in scope: data constructor `List'
> 
> <interactive>:1:5: Not in scope: `\\'
> Prelude> :q
> Leaving GHCi.
> kyagrd at kyagrd:~/tmp$ ghc --version
> The Glorious Glasgow Haskell Compilation System, version 6.10.4
> kyagrd at kyagrd:~/tmp$ uname -a
> Linux kyagrd 2.6.30-2-686 #1 SMP Sat Sep 26 01:16:22 UTC 2009 i686 GNU/Linux