From: John Max Skaller <skaller@ozemail.com.au>
To: Chet Murthy <chet@watson.ibm.com>
Cc: Chris Hecker <checker@d6.com>,
Mattias Waldau <mattias.waldau@abc.se>,
Caml-List <caml-list@inria.fr>
Subject: Re: Same label in different types, how do people solve this?
Date: Wed, 13 Dec 2000 04:43:17 +1100 [thread overview]
Message-ID: <3A3663B5.412BECE2@ozemail.com.au> (raw)
In-Reply-To: <200012120325.WAA12331@bismarck-chet.watson.ibm.com>
Chet Murthy wrote:
> The issue, about practicality, isn't whether you _can_ specify the
> particular types and type-usages you want. The issue is whether, if
> you write a phrase, and you got it wrong, you have to know all about
> the type system, in order to debug that phrase.
It is a tradeoff. Full inference makes code short: lack of
inference severely pollutes programming style (as in C++).
In Felix, I compromised: functions must be explicitly typed
when declared, but values don't:
function f(a:int): int { val b = a; return b; }
f must be explicitly typed. The type of b is deduced.
Compare with
let f a = let b = a in b;;
The explicit typing of functions avoids a need for
a full scale type inference algorithm.
--
John (Max) Skaller, mailto:skaller@maxtal.com.au
10/1 Toxteth Rd Glebe NSW 2037 Australia voice: 61-2-9660-0850
checkout Vyper http://Vyper.sourceforge.net
download Interscript http://Interscript.sourceforge.net
next prev parent reply other threads:[~2000-12-14 18:15 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2000-12-06 21:22 Mattias Waldau
2000-12-07 16:49 ` John Max Skaller
2000-12-07 18:34 ` Maxence Guesdon
2000-12-07 23:02 ` Gerd Stolpmann
2000-12-08 1:22 ` Jacques Garrigue
2000-12-08 9:31 ` Sven LUTHER
2000-12-08 9:36 ` Pierre Weis
2000-12-08 9:48 ` Sven LUTHER
2000-12-08 18:41 ` John Max Skaller
2000-12-08 9:40 ` Nicolas barnier
2000-12-08 16:36 ` Brian Rogoff
2000-12-11 17:19 ` Pierre Weis
2000-12-10 12:49 ` Mattias Waldau
2000-12-11 18:23 ` Chris Hecker
2000-12-11 19:17 ` Pierre Weis
2000-12-12 10:02 ` Sven LUTHER
2000-12-12 3:25 ` Chet Murthy
2000-12-12 17:43 ` John Max Skaller [this message]
2000-12-12 19:24 ` Functions must be explicitly typed, (was Same label in different types, how do people solve this?) Mattias Waldau
2000-12-13 0:51 ` John Max Skaller
2000-12-15 10:13 ` Andreas Rossberg
2000-12-15 12:50 ` Frank Atanassow
2000-12-14 18:42 ` Stefan Monnier
2000-12-15 12:47 ` Pierre Weis
2000-12-15 13:39 ` Mattias Waldau
2000-12-15 23:37 ` Brian Rogoff
2000-12-16 14:10 ` ROverloading John Max Skaller
2000-12-15 21:51 ` Same label in different types, how do people solve this? Bruce Hoult
2000-12-12 17:19 ` John Max Skaller
2000-12-10 14:57 Ohad Rodeh
2000-12-13 13:17 Dave Berry
2000-12-13 14:31 ` Mattias Waldau
2000-12-15 10:01 ` John Max Skaller
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