class allocators should be more encapsulated
nothing at pathlink.com
Fri Dec 29 09:57:55 PST 2006
Benji Smith wrote:
> Luís Marques wrote:
>> Hello all.
>> I need to build a class for which there should be only one instance
>> with a given attribute (of type char).
> Isn't this the standard idiom for this kind of keyed singleton pattern?
> I don't see why a custom allocator ever needs to be involved.
I think what would be needed is a total replacement for the creation of
an object. This would require that this:
translate to something like this:
I think that what Luis is looking for is the means to use a singleton
class with the standard new syntax. This would be nice for things like
t.length = 1;
t = new T; // <<<<<
//this template can't be used unless new type
// construction is allowed
That said, I don't yet have an opinion on if this is a good idea.
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