Ray's playground

摘要： The savings from minifying CSS are typically less than the savings from minifyingJavaScript because CSS generally has fewer comments and less whitespace than Java-Script.The greatest potential for siz... 阅读全文

摘要： When is an empty class not an empty class? When C++ gets through with it. If you don't declare them yourself, compilers will declare their own versions of a copy constructor, a copy assignment operato... 阅读全文

摘要： Manually initialize objects of built-in type, because C++ only sometimes initializes them itself. 　　In a constructor, prefer use of the member initialization list to assignment inside the body of the ... 阅读全文

摘要： The wonderful thing about const is that it allows you to specify a semantic constraint — a particular object should not be modified — and compilers will enforce that constraint. It allows ... 阅读全文

摘要： [代码] 阅读全文

摘要： [代码]Output: HELLO, I'M RAY　　　　hello, i'm ray　　　　Hello, i'm ray　　　　HELLO, i'm RAY　　　　hello, I'M rayThe upcase and downcase methods force all letters in the string to upper-or lowercase, respectively. T... 阅读全文

摘要： The standard exception classes can be divided into three groups:Exceptions for language supportExceptions for the C++ standard libraryExceptions for errors outside the scope of a program　　The C++ stan... 阅读全文

摘要： When you do something like this,[代码]　　the symbolic name ASPECT_RATIO may never be seen by compilers; it may be removed by the preprocessor before the source code ever gets to a compiler.　 As a result,... 阅读全文

摘要： The easiest way is to view C++ not as a single language but as a federation of related languages. Within a particular sublanguage, the rules tend to be simple, straightforward, and easy to remember. W... 阅读全文

摘要： Nothing special. 阅读全文