Re: [boost] Re: std::complex design (Was: N-Dimensional array lib rary submission...)

From: nbecker_at_[hidden]
Date: 2002-03-06 14:20:41

>>>>> "rwgk" == rwgk  <rwgk_at_[hidden]> writes:

    rwgk> --- In boost_at_y..., "Stewart, Robert" <stewart_at_s...> wrote:
    >> > Unfortunately the reserve() solution eventually requires
    >> > use of push_back(), which is also slow.
    >> 
    >> If you use push_back() following reserve(), there is no performance 
    rwgk> penalty.
    >> The push_back()'ed object is copied into the next element.  If you 
    rwgk> exceed
    >> the size allocated with reserve(), then push_back() will cause 
    rwgk> reallocation
    >> and copying, so be sure to choose the right size when calling 
    rwgk> reserve().

    rwgk> Here is an example push_back() implementation:

I'm afraid I don't see the relevence.  I believe complex should not
require workarounds to avoid calling a default constructor.  Am I
missing something?