On Fri, Apr 12, 2013 at 4:09 PM, Karen Shaeffer <shaef...@neuralscape.com>wrote:
> On Fri, Apr 12, 2013 at 03:41:17PM -0700, Benjamin Poulain wrote: > > On Fri, Apr 12, 2013 at 3:33 PM, Karen Shaeffer < > shaef...@neuralscape.com>wrote: > > > > > > Was reading the coding-style documentation. Have just one question > > > concerning > > > C++ null pointer value. Quoting the coding-style docs, "In C++, the > null > > > pointer > > > value should be written as 0." > > > > > > My question is: Doesn't xcode clang now support features like nullptr? > > > Shouldn't > > > the coding-style documentation be updated to use nullptr? > > > > > > > The problem is the variety of compilers used by the various ports (WebKit > > is also used on Windows, Linux, Solaris, etc.), not all of them supports > > nullptr. > > > > You can already use nullptr with some types (RefPtr, OwnPtr, etc). That > is > > thanks to a hack in Source/WTF/wtf/NullPtr.h > > > > Cheers, > > Benjamin > > Hi Benjamin, > Of course, I understand that. But there is a huge opportunity cost to > webkit. > The c++11 standard also rewrites the entire standard library. I have been > using > g++ 4.7.2 using -stdc++11 in my work with linux. And the code I have > tested is > performing nearly like c code. If you take advantage of the performance > enhancements > in C++11, then you can realize impressive performance gains. > > I do understand the nature of the business. And I also understand that > performance > is huge moving forward, where resource constrained mobile platforms are > significantly > affected by performance issues. I suggest you'll see Blink moving > aggressively to > support C++11 moving forward. And I suggest it is in WebKit's long term > interest to > do so as well. > It certainly is our long term goal but we can't do that today. C++11 support is not ubiquitous, and portability is one of our project goals as stated on http://www.webkit.org/projects/goals.html. - R. Niwa
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