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Re: Pick overloaded by Rvalue? [message #19286 is a reply to message #19285]

Mon, 24 November 2008 11:59

mirek is currently offline

mirek
Messages: 13976
Registered: November 2005

Ultimate Member

bytefield wrote on Mon, 24 November 2008 04:47

So, is better for Upp and for us to stay away from C++ new standard.

luzr wrote

Unfortunately, the main disadvantage of rvalue references is that they do not compose:

struct Foo {
Vector<int> x, y;
};

- such construct would lack auto-generated pick constructor.

I think that is solved by using rvalue references + "move" constructor, that if every object implement move constructor(thought not auto-generated).

Last time I have checked, compiler never generates implicit move constructor.

Moreover:

struct Foo {
   Vector<int> x;
   int y;
};

Here U++ has natural pick copy of Foo - created by mixing 'deep' and 'pick' constructors of various members.

Well, AFAIK, authors of r-value references considered such feature "too complex and error-prone". Go figure Smile

Smile

(It is however possible that the stance has changed since then - in that case, my stance w.r.t. next C++ would completely changed Smile

Smile

Mirek

[Updated on: Mon, 24 November 2008 12:03]

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[Message index]

		Pick overloaded by Rvalue? By: bytefield on Tue, 11 November 2008 23:44
		Re: Pick overloaded by Rvalue? By: mirek on Wed, 12 November 2008 00:29
		Re: Pick overloaded by Rvalue? By: cbpporter on Wed, 12 November 2008 08:01
		Re: Pick overloaded by Rvalue? By: bytefield on Wed, 12 November 2008 10:48
		Re: Pick overloaded by Rvalue? By: mirek on Wed, 12 November 2008 11:00
		Re: Pick overloaded by Rvalue? By: bytefield on Wed, 12 November 2008 12:20
		Re: Pick overloaded by Rvalue? By: mdelfede on Wed, 12 November 2008 16:05
		Re: Pick overloaded by Rvalue? By: Mindtraveller on Wed, 12 November 2008 19:34
		Re: Pick overloaded by Rvalue? By: bytefield on Wed, 12 November 2008 20:33
		Re: Pick overloaded by Rvalue? By: captainc on Wed, 12 November 2008 20:27
		Re: Pick overloaded by Rvalue? By: bytefield on Wed, 12 November 2008 20:37
		Re: Pick overloaded by Rvalue? By: mirek on Wed, 12 November 2008 22:04
		Re: Pick overloaded by Rvalue? By: unodgs on Wed, 12 November 2008 23:46
		Re: Pick overloaded by Rvalue? By: captainc on Thu, 13 November 2008 00:20
		Re: Pick overloaded by Rvalue? By: mirek on Thu, 13 November 2008 14:37
		Re: Pick overloaded by Rvalue? By: mirek on Thu, 13 November 2008 14:38
		Re: Pick overloaded by Rvalue? By: cbpporter on Fri, 21 November 2008 14:17
		Re: Pick overloaded by Rvalue? By: captainc on Fri, 21 November 2008 19:48
		Re: Pick overloaded by Rvalue? By: cbpporter on Sat, 22 November 2008 10:04
		Re: Pick overloaded by Rvalue? By: unodgs on Sat, 22 November 2008 10:49
		Re: Pick overloaded by Rvalue? By: mirek on Sat, 22 November 2008 13:19
		Re: Pick overloaded by Rvalue? By: mirek on Sat, 22 November 2008 13:22
		Re: Pick overloaded by Rvalue? By: unodgs on Sat, 22 November 2008 14:54
		Re: Pick overloaded by Rvalue? By: captainc on Sun, 23 November 2008 20:53
		Re: Pick overloaded by Rvalue? By: cbpporter on Mon, 24 November 2008 01:18
		Re: Pick overloaded by Rvalue? By: bytefield on Mon, 24 November 2008 06:55
		Re: Pick overloaded by Rvalue? By: mirek on Mon, 24 November 2008 08:32
		Re: Pick overloaded by Rvalue? By: mirek on Wed, 12 November 2008 21:54
		Re: Pick overloaded by Rvalue? By: mr_ped on Mon, 24 November 2008 09:05
		Re: Pick overloaded by Rvalue? By: bytefield on Mon, 24 November 2008 10:47
		Re: Pick overloaded by Rvalue? By: mirek on Mon, 24 November 2008 11:59
		Re: Pick overloaded by Rvalue? By: captainc on Mon, 24 November 2008 19:25

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