X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=docs%2Fusers_guide%2Fghci.xml;h=6e54ace77898c915a4d9acce5138bfc36f909524;hb=df47ef3b970bc9ff1ba4935262ebc6f5fdd0334d;hp=402c7cb58c99394357bc5842f076708aa5f6ca0f;hpb=3d73e45b0909b9669d4679cbda29fa2b17b98d2e;p=ghc-hetmet.git
diff --git a/docs/users_guide/ghci.xml b/docs/users_guide/ghci.xml
index 402c7cb..6e54ace 100644
--- a/docs/users_guide/ghci.xml
+++ b/docs/users_guide/ghci.xml
@@ -28,8 +28,11 @@
$ ghci
-GHCi, version 6.8.1: http://www.haskell.org/ghc/ :? for help
+GHCi, version 6.12.1: http://www.haskell.org/ghc/ :? for help
+Loading package ghc-prim ... linking ... done.
+Loading package integer-gmp ... linking ... done.
Loading package base ... linking ... done.
+Loading package ffi-1.0 ... linking ... done.
Prelude>
@@ -814,12 +817,12 @@ it <- e
ghci> reverse []
What should GHCi do? Strictly speaking, the program is ambiguous. show (reverse [])
- (which is what GHCi computes here) has type Show a => a and how that displays depends
+ (which is what GHCi computes here) has type Show a => String and how that displays depends
on the type a. For example:
- ghci> (reverse []) :: String
+ ghci> reverse ([] :: String)
""
- ghci> (reverse []) :: [Int]
+ ghci> reverse ([] :: [Int])
[]
However, it is tiresome for the user to have to specify the type, so GHCi extends Haskell's type-defaulting
@@ -2331,6 +2334,16 @@ bar
+ :run
+ :run
+
+
+ See :main.
+
+
+
+
+
:set option...
:set
@@ -2386,7 +2399,9 @@ bar
Inside prompt, the sequence
%s is replaced by the names of the
modules currently in scope, and %% is
- replaced by %.
+ replaced by %. If prompt
+ starts with " then it is parsed as a Haskell String;
+ otherwise it is treated as a literal string.
@@ -2906,6 +2921,13 @@ Prelude> :set -fno-glasgow-exts
because this is normally what you want in an interpreter:
output appears as it is generated.
+
+ If you want line-buffered behaviour, as in GHC, you can
+ start your program thus:
+
+ main = do { hSetBuffering stdout LineBuffering; ... }
+
+