Ray's playground

摘要： CppLib.hCode highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/--1structStash2{3intsize;4intquantity;5intnext;6unsignedchar*storage;7voidinitialize(intsize);8v... 阅读全文

摘要： While you're editingsettings.py, take note of the INSTALLED_APPSsetting towards the bottom of the file. That variable holds the names of all Django applications that are activated in this Django insta... 阅读全文

摘要： codeCode highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/--1#include<iostream>2#include<cstdlib>3usingnamespacestd;456voidPrintBinary(constunsign... 阅读全文

摘要： You can declare a variable or a function in many different places,but there must be only one definition in C and C++ (this issometimes called the ODR: one-definition rule). 阅读全文

摘要： To archive objects other than those listed, you must tell the system how to archive, orencode, your objects, and also how to unarchive, or decode, them.This is done by addingencodeWithCoder: and initW... 阅读全文

摘要： The Foundation classes implement methods known as copy and mutableCopy that youcan use to create a copy of an object.This is done by implementing a method in conformancewith the <NSCopying> prot... 阅读全文

摘要： A file or directory is uniquely identified to NSFileManager using a pathname to the file.Apathname is an NSString object that can either be a relative or full pathname.A relativepathname is one that i... 阅读全文

摘要： The line　　@property (copy, nonatomic) NSString *name, *email;　　lists the attributes copy and nonatomic for the properties.The copy attribute says to makea copy of the instance variable in its setter m... 阅读全文

摘要： SquareDigitsCode highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/--1#include<set>2usingnamespacestd;34classSquareDigits5{6private:7ints(intx);89public:... 阅读全文

摘要： If you place a # in front of a parameter in a macro definition, the preprocessor creates aconstant C-style string out of the macro argument when the macro is invoked. For example,　　the definition　　#de... 阅读全文