Copy constructors for lazy initialization
newshound1 at digitalmars.com
Fri May 28 19:34:46 PDT 2010
Jonathan M Davis wrote:
> The weird thing here is that you're actually altering the parameter that you
> passed in, which is normally a major no-no with copy constructors.
One subtle but important distinction from C++ is that D can omit copy
construction completely if the compiler can determine there are no further uses
of the source object, and substitute a simple bit copy. This should result in a
fundamental performance improvement.
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