Ray's playground

摘要： A regular expressionis the specification of the syntax of a simple language. Regular expressions are used with methods to search, replace, and extract information from strings. The methods that work w... 阅读全文

摘要： Query and fluent syntax each have advantages.　　Query syntax is simpler for queries that involve any of the following:　　• A let clause for introducing a new variable alongside the range variable　... 阅读全文

摘要： Working with remote services is typically a tedious chore. But Spring providesremoting support that makes working with remote services as simple as workingwith any regular JavaBean.　　On the client sid... 阅读全文

摘要： RubyGems is a standardized packaging and installation framework for Ruby libraries andapplications. RubyGems makes it easy to locate, install, upgrade, and uninstall Ruby packages.　　Rake was initially... 阅读全文

摘要： codeCode highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/--1varis_array=function(value){2returnvalue&&3typeofvalue==='object'&&4typeofvalue.l... 阅读全文

摘要： codeCode highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/--1varMammal=function(name){2this.name=name;3};45Mammal.prototype.get_name=function(){6returnthis.na... 阅读全文

摘要： ModuleCode highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/--1varserial_maker=function(){2varprefix='';3varseq=0;45return{6set_prefix:function(p){7prefix=Str... 阅读全文

摘要： There are four patterns of invocation in JavaScript: the method invocation pattern, the function invocation pattern, the constructor invocation pattern, and the apply invocation pattern. The patterns ... 阅读全文

摘要： The undefined value is produced if an attempt is made to retrieve a nonexistent member:　　Attempting to retrieve values from undefined will throw a TypeError exception. This can be guarded against with... 阅读全文

摘要： JavaScript has a single number type. Internally, it is represented as 64-bit floating point, the same as Java's double.　　A block is a set of statements wrapped in curly braces. Unlike many other langu... 阅读全文