copy on write
dihedral88888 at googlemail.com
Fri Feb 3 23:16:45 CET 2012
在 2012年1月14日星期六UTC+8上午6时48分29秒，Evan Driscoll写道：
> On 01/13/2012 03:20 PM, Neil Cerutti wrote:
> > They perform the same action, but their semantics are different.
> > operator+ will always return a new object, thanks to its
> > signature, and operator+= shall never do so. That's the main
> > difference I was getting at.
Well, in any associative operation with an identity implemented in a computer language personally I believe the operator overloading part in C++ is another teasing trick.
Do we have to work out the algebra here?
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