Ray's playground

摘要： codeCode highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/--1usingSystem;2usingSystem.Collections.Generic;3usingSystem.Linq;4usingSystem.Text;56namespaceEffectiveCSharpItem237{8interfaceIMsg9{10voidMessage();11}1213publicclassMyClass:IMsg14{15publicvoidMessa 阅读全文

摘要： PersonCode highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/-->1#import"Person.h"234@implementationPerson56-(id)init7{8[superinit];9expectedRaise=5.0;10personName=@"NewPerson";11returnself;12}1314-(void)dealloc15{16[personNamerelease];1 阅读全文

摘要： Base classes describe and implement common behaviors across relatedconcrete types. Interfaces describe atomic pieces of functionality that unrelatedconcrete types can implement. Both have their place. Classes definethe types you create. Interfaces describe the behavior of those types aspieces of fun 阅读全文

摘要： codeCode highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/-->1importsys2importstring34CHAR_MAP=dict(zip(string.ascii_lowercase,string.ascii_lowercase[13:26]+5string.ascii_lowercase[0:13]))67defrotate13_letter(letter):8"""9Returnthe13-charrot 阅读全文

摘要： Those classes and interfaces that you expose publicly to the outside worldare your contract: You must live up to them. The more cluttered that interfaceis, the more constrained your future direction is. The fewer publictypes you expose, the more options you have to extend and modify anyimplementatio 阅读全文

摘要： Immutable types are simpler to code and easier to maintain. Don’t blindly create get and set accessors for every property in your type. Your first choice for types that store data should be immutable, atomic value types. You easily can build more complicated structures from these entities. 阅读全文

摘要： To invoke a template by name, two things have to happen: • The template you want to invoke has to have a name. • You use the <xsl:call-template> element to invoke the named template. The XSLT <xsl:template> element has a mode attribute that lets you pr 阅读全文

摘要： [代码]AppController.mCode highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/-->1#import"AppController.h"23@implementationAppController45-(id)init6{7[superinit];8[selfsetValue:[NSNumbernumberWithInt:5]forKey:@"fido"];9NSNumber*n=[selfvalueF 阅读全文

摘要： The system initializes all instances of value types to 0. There is no way toprevent users from creating instances of value types that are all 0s. If possible,make the all 0 case the natural default. As a special case, enums usedas flags should ensure that 0 is the absence of all flags. 阅读全文

摘要： The Garbage Collector does an efficient job of managing the memory thatyour application uses. But remember that creating and destroying heapobjects still takes time. Avoid creating excessive objects; don’t create whatyou don’t need. Also avoid creating multiple objects of referen 阅读全文