Ray's playground

摘要： There are seven kinds of nodes in XPath:　　• The document node (one per document)　　• Element nodes　　• Attribute nodes　　• Text nodes　　• Comment nodes　　• Processing instruction nodes　　• Namespace nodes 阅读全文

摘要： Conversion operators introduce a form of substitutability that causes problems in your code. You’re indicating that, in all cases, users can reasonably expect that another class can be used in place of the one you created. When this substituted object is accessed, you cause clients to work with temp 阅读全文

摘要： C# began as an imperative language. It continues to include all the featuresthat are part of that heritage. It’s natural to reach for the most familiartools at your disposal. However, those tools might not be the best tools.When you find yourself writing any form of a looping construct, ask yourself 阅读全文

摘要： Summarizing the default behavior, Object.GetHashCode() works correctlyfor reference types, although it does not necessarily generate an efficientdistribution. (If you have overridden Object.operator==(), you can breakGetHashCode()). ValueType.GetHashCode() works only if the first field inyour struct 阅读全文

摘要： [代码][代码]java -cp saxon9he.jar net.sf.saxon.Transform -t -greeting.xml -xsl:greeting.xsl -o:output.html[代码] 阅读全文

摘要： C# gives you numerous ways to test equality, but you need to consider providingyour own definitions for only two of them, along with supporting theanalogous interfaces. You never override the static Object.ReferenceEquals()and static Object.Equals() because they provide the correct tests, regardless 阅读全文

摘要： AppController.hCode highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/--1#importFoundation/Foundation.h234@interfaceAppController:NSObject5{6IBOutletNSTextField*textField;7NSSpeechSynthesizer*speechSynth;8}910-(IBAction)sayIt:(id)sender;11-(IBAction)stopIt: 阅读全文

摘要： [代码] 阅读全文

摘要： JavaScript ’ s lack of block - level scopes is a common source of confusion.[代码]　　When a variable is declared using var , it is automatically added to the most immediate contextavailable. In a function, the most immediate one is the function ’ s local context; in a with statement, themost immediate 阅读全文

摘要： The end result was forECMAScript to provide two sets of operators: equal and not equal to perform conversion beforecomparison, and identically equal and not identically equal to perform comparison without conversion.equalityCode highlighting produced by Actipro CodeHighlighter (freeware)http://www.C 阅读全文