O''''''''Reilly Network For Information About''''''''s Book part 48 pps

... runtime overhead for performing dynamic_casts. To avoid that overhead, it is tempting to use static_cast, which doesn't have such performance implications. static_cast for downcasts can ... performed. polymorphic_downcast tests the cast with dynamic_cast, but only in debug builds; it then uses static_cast to perform the conversion. In release mode, only the static_cast is perfor...

Ngày tải lên: 07/07/2014, 08:20

... it seemed like a really good idea. Mostly, for what Java was designed for, they got it right. Of course, it's a strongly typed language, which for some purposes is great, and other purposes ... a void. Figure 2-3 shows the many ingredients that come together to form the perfect storm. Figure 2-3. Many forces formed the combined ingredients that led to a perfect storm 2.3...

Ngày tải lên: 07/07/2014, 08:20

... it opened up the possibility of selling a whole new kind of product: information. The new economy was born. At least in part, it was powered by Java, and the companies that built the servers, ... commerce drove a new need for new tools. Sun, Oracle, BEA, and IBM worked on new standards to enable enterprise on the Web. IBM coined the term e-business to stand for a new, powerful way...

Ngày tải lên: 07/07/2014, 08:20

... goal for the Internet is this: give all users a single application platform (we call it a browser), and give them the ability to run applications in it. Initially, those applications took the form ... capabilities and a cornucopia of third-party (meaning open source for me) libraries. What don't you like? EH: I sympathize with newcomers to the Java "platform." We al...

Ngày tải lên: 07/07/2014, 08:20

... explicitly, he probably won't deal with it at all. For me, and for many of my customers, checked exceptions tend to hurt more than they help, for many reasons:  The exception syntax is incredibly ... natural part of an application. Part of Java's over-reliance on XML comes from its limited ability to express structured data. In Ruby, I can quickly declare a hash map...

Ngày tải lên: 07/07/2014, 08:20

... should bet my Fortune 500 enterprise on a Japanese Mormon named Matz?" What are the big obstacles? DA: Inertia is a serious concern for large companies. What is the roadmap for Ruby? ... There are many great things written on top of the JVM. Ruby feels best for me as a language (for certain tasks), but the platform is harder to sell. If I can get a merger of the two, I...

Ngày tải lên: 07/07/2014, 08:20

... prompt you for each dependency. Answer "Y," or answer "a" once for all dependencies: Attempting remote installation of 'rails' Updating Gem source index for: http://gems.rubyforge.org ... gem install rails -v 0.12.1 Ruby will start the installation process. It goes up to RubyForge (rubyforge.org) and pulls down an index including the appropriate ver...

Ngày tải lên: 07/07/2014, 08:20

... want to break logical control structures, as in implementing a break for our for loop, or processing exceptions. For the most part, though, you want to think "suspend and resume." Continuations ... before it was called Java, and was the author of one of the first advanced Java books. Glenn has 19 years of software development experience, encompassing a wide variety of la...

Ngày tải lên: 07/07/2014, 08:20

... library. The author of Filesystem is Beman Dawes. Boost.Format This library adds functionality for formatting arguments according to format strings, similar to printf, but with the addition ... Besides eliminating the opportunity for such mismatches, Format also enables custom formatting of user- defined types. [4] [4] This is not possible with formatting functions using a variab...

Ngày tải lên: 07/07/2014, 08:20

... container_type container; for (int i=0;i<10;++i) { container.push_back(createA()); } std::cout << "The choir is gathered: \n"; iterator end=container.end(); for (iterator it=container.begin();it!=end;++it) ... dynamically allocated instance of the pimpl, if copying is not permitted for the class using the idiom. That is not appropriate for all classes...

Ngày tải lên: 07/07/2014, 08:20