From: Hendrik Tews <tews@tcs.inf.tu-dresden.de>
To: "Caml-List" <caml-list@inria.fr>
Subject: Re: [Caml-list] How to implement "Singleton" design pattern?
Date: Mon, 5 Aug 2002 11:28:33 +0200 (CEST) [thread overview]
Message-ID: <15694.17729.991123.603983@gargle.gargle.HOWL> (raw)
In-Reply-To: <002d01c23aae$b44a6490$fe00a8c0@hama>
SooHyoung Oh writes:
Date: Sat, 3 Aug 2002 14:29:13 +0900
Subject: [Caml-list] How to implement "Singleton" design pattern?
And then how can we solve the (1)?
There are some possible solutions:
(a) invisible class definition in a module
(b) the class definition which can't be called with "new" (private class ?)
(c) local class definition (in another class definition ?)
Which one/ones is/are feasible and/or good in Ocaml?
And are there any other solutions?
If it is enough to detect the error at runtime:
You can use an initializer that raises an exception if a second
object is created.
Bye,
Hendrik
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next prev parent reply other threads:[~2002-08-05 9:28 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-08-03 5:29 SooHyoung Oh
2002-08-03 17:42 ` Tim Freeman
2002-08-05 9:28 ` Hendrik Tews [this message]
2002-08-05 17:48 Gurr, David (MED, self)
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