[KPhotoAlbum] Inefficiency in ImageSearchInfo::match()
Jesper K. Pedersen
blackie at kde.org
Tue Sep 11 11:53:57 BST 2012
On Sunday 09 September 2012 20:07:34 Robert Krawitz wrote:
> While coding up the file name match, I noticed that
> ImageSearchInfo::match() doesn't return as soon as it knows that an
> image hasn't matched. There's a lot of code of the form:
>
> bool ok = true;
> #ifdef HAVE_EXIV2
> ok = _exifSearchInfo.matches( info->fileName() );
> #endif
> ...
> ok &= ( _label.isEmpty() || info->label().indexOf(_label) != -1 );
> ...
> return ok;
>
>
> Is there any reason it does this rather than simply return if any of
> these tests fail?
I'm 99% sure that &= will not evaluate the right side if the left side already
is false.
So in effect it does the return right away.
Cheers
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