From: David Abrahams (dave_at_[hidden])
Date: 2004-08-07 12:31:07
Rob Stewart <stewart_at_[hidden]> writes:
> From: Tylo <tylo_at_[hidden]>
>>
>> I propose this usage (for shared_ptr):
>>
>> shared_ptr<Widget> wp1 = NULL; // 1a
<snip>
>> Current shared_ptr usage:
>>
>> shared_ptr<Widget> wp1( NULL ); // 2a
>
> Lines 1a and 2a are just the difference between assignment and
> initialization syntax.
It's the difference between copy initialization and direct
initialization.
> The former can be slower than the latter, though the difference may
> be optimized away.
On many compilers where there is a difference, copy initialization is
actually faster than direct initialization.
-- Dave Abrahams Boost Consulting http://www.boost-consulting.com