If you are not using them to prevent overlapping instances, then why
require instance decls at all? For example, why does
GHC require an instance decl here:
instance (Ord x)=ToSet [] x where toSet = Set.fromList
But not here:
listToSet x = Set.fromList x
Or I suppose, one could rephrase
Is it widely accepted that the precedence of infix operators is defined by
numbers? The numbers look arbitrary to me and it is not possible to
introduce infix operators with interim precedences.
What about defining relations such as (*) has precedence over (+)? The
compiler could construct a
Henning Thielemann writes:
Is it widely accepted that the precedence of infix operators is defined by
numbers? The numbers look arbitrary to me and it is not possible to
introduce infix operators with interim precedences.
What about defining relations such as (*) has precedence over (+)? The
Hi Group,
i'm trying to complete an haskell pgsql interface.
all compiles well when using ghc's generated executable
but it segfaults when i do a pqexec.
-- PGresult *PQexec(PGconn *conn, const char *query);
foreign import ccall libpq-fe.h PQexec
pqexec::X_PGconn-CString-IO X_PGresult
Simon Marlow [EMAIL PROTECTED] writes:
Is it important which thread executes Haskell code (I bet no) and
unsafe foreign calls (I don't know)? If not, couldn't the same OS
thread execute code of both threads until a safe foreign call is made?
Actually in a bound thread, *all* foreign calls
| Or I suppose, one could rephrase this question as why not
| simplify instance declarations to be:
|
|instance ToSet where
| toSet = Set.fromList
|
| And let the typechecker take care of figuring out what instance is
| being specified here?
That might be possible, but Haskell forces
Hi,
I've seen some options for GUI programming in Haskell libraries page,
but what I really would like is to define my user interface using HTML
(or, maybe, SVG). What are the options to do that in Haskell? I've read
that Gtk2Hs has a mozilla rendering engine, but unfortunatly that won't
G'day all.
Quoting [EMAIL PROTECTED]:
Widely accepted is a widely accepted relativism...
I am also annoyed by the precedences 0,1,2, ...,9, etc.
Why not 10, 20, 30,... ??
I _think_ we had this back around Haskell 1.1 (which I never used, but
early Gofers also had it). Moreover, operators
