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, which avoids the interference caused by the prototype object extension, let's take a look at the example:Modify Object.prototypeObject.prototype.bar = 1;var foo = {Moo:2};for (var i in Foo) { Console.log (i); Output two properties: Bar and Moo}We have no way to change the behavior of the for in statement, so we can only use the hasOwnProperty method to filter the results, the code is as follows:The foo

not traverse the attributes whose enumerable is set to false, such as The length attribute of the array. The Code is as follows: // Modify Object. prototypeObject. prototype. bar = 1;Var foo = {moo: 2 };For (var I in foo ){Console. log (I); // two attributes are output: bar and moo.} Because it is impossible to change the behavior of for in itself, it is necessary to filter out the attributes that do n

1 each method cannot break.Example: Find the first even number in an array.var myarr=[1,2,3,15,5,21,22];var rs=0;www.hrbfc120.comMyarr.each (function (VAL,IDX) {if (val%2 ==0) {Rs=val;return; Return is not what I want, I want to be here convenient and quick to end each, what to do?}});What I'm thinking now is throwing an exception with throw, and I don't know if you have a better solution.(Of course, change the MOO source code can get a better solutio

1 each method cannot break.Example: Find the first even number in an array.var myarr=[1,2,3,15,5,21,22];var rs=0;Myarr.each (function (val,idx) {www.mlyrx120.comif (val%2 ==0) {Rs=val;return; Return is not what I want, I want to be here convenient and quick to end each, what to do?}});What I'm thinking now is throwing an exception with throw, and I don't know if you have a better solution.(Of course, change the MOO source code can get a better solutio

HasOwnProperty is the only method that can complete this task when detecting whether an object has a certain attribute. During the forin loop, we recommend that you add hasOwnProperty for determination, compared with the in operator, for in also traverses the prototype chain when looping object attributes. for in does not read non-enumerative attributes, for example, the length attribute of an array. Summary when detecting whether an object has a certain attribute, hasOwnProperty is the only met

Today, someone in the group asked why there was always an error when I used extend extension for the Number. I remember reading the Moo source code a few days ago, it seems that the Number was only extended using implement, extend seems to be used for Function expansion, so I checked the official documentation. Http://mootools.net/docs/core/Core/Core Type method: extendAdds one or more functions to the type. These are static functions that accept for

Valerio released mootools tonight, a javascript framework that integrates the effects class (Moo. FX) Ajax class (Moo. ajax), Dom selection class (Moo. dom), add the drag and drop, sortable lists (Chinese do not know how to explain, the result is that there is a list in a small space that can be dragged and sorted ^ !), Cookies management and other functions. It

, Cr extends PT, newtonscr extends PT, Io, moo, REBOL, Kevo, and several others. The original (and most classic) Example of a prototype-based language is the program language self, which was developed by David Ungar and Randall Smith. However, the Class-less programming method has become more and more popular recently and has been adopted by Cecil, javascr into PT, newtonscr into PT, Io, moo, REBOL, Kevo, a

does not protect hasOwnProperty from being illegally occupied. Therefore, if an object happens to have this property, you need to use the external hasOwnProperty function to obtain the correct result. Var foo = {hasOwnProperty: function () {return false ;}, bar: 'Here be dragons'}; foo. hasOwnProperty ('bar'); // always returns false // use the hasOwnProperty of the {} object and set it up and down to foo {}. hasOwnProperty. call (foo, 'bar'); // true HasOwnProperty is the only available me

properties of an object. There is no other way to exclude attributes from the prototype chain, rather than to define the properties on the object itself.But there is a disgusting place: JavaScript does not protect hasOwnProperty from being illegally occupied, so if an object happens to have this attribute, you need to use an external hasownproperty function to get the correct result. var foo = { hasownproperty:function () {return false; }, bar: ' Here is Dragons ' }; Foo.hasownproperty (' Bar '

implement all abstract methods in the abstract class, or the subclass must be an abstract class. The subclass implementation interface must implement all the abstract methods in the interface. Case 2: Presentation of the interfacepublic Class Interfacedemo {public static void main (string[] args) {//inter6 o1= new Inter6 (); Compile error, interface cannot be instantiated Inter6 O2 = new Moo (); Up styling Inter5 O3 = new

+ + beginner with no programming experience, or a C + + beginner with other language experience, the following books are highly recommended. C + + Primer 1 Stanley lippman, Josée Lajoie, and Barbara E. Moo (updated to c++11) nearly 1000 pages, this book is a thorough introduction to C + +, in a plain and detailed way about the C + + language almost all within Capacity. The fifth edition, released in August 2012, contains c++11 content.

properties that enumerable set to false, such as the length property of the array. Copy Code code as follows: Modify Object.prototype Object.prototype.bar = 1; var foo = {Moo:2}; for (var i in Foo) { Console.log (i); Output two properties: Bar and Moo } Because it is not possible to change the behavior of for in itself, it is necessary to filter out those attributes th

Postgresqlサーバの Li accentuate on げに less しハマりましたので, メモしておきます.os:ubuntu14.04 LTSインストールInitially はpostgresqlをインストールします.Ordinary occupies apt-get コマンドを make えばインストールできますので, special pen すべきことはありません.$ sudo apt-get update$ sudo apt-get install-y postgresql-9.3　　インストールが out ましたら, /etc/init.d/ occupies start with のスクリプトが make されるはずです.startコマンドでサーバを accentuate on げられますが, このままでは connect Yobitsugi できません.$/etc/init.d/postgresql Start * Starting PostgreSQL 9.3 database server [OK]$/etc/init.d/

(Stanley Lippman, Josée Lajoie, and Barbara E. Moo)Review: About 1000 pages of thickness, a very comprehensive introduction to C + +, covering all aspects of the language, explained in very detailed.I read the "C + + primer" after reading "C + + primer", and I learned C language and data structure before. Feel that there is a certain difficulty, the back of the object-oriented and generics almost do not understand. As a novice, does this book really

be customizedFactor: Decomposition factorShred: Overwrite file so it can't be read again (the legendary file shredder.) )These two funny: Apt-get Moo(__)(OO)/------\// | ||* /\---/\~~ ~~... "Have you mooed today?" ... Apt-build Moo(__) ~(OO)/_____\/___// /\ / /~ / * // ___/*----/\/ \/ /~ ~... "Have you danced today?" Discow! " ...Try one of the following:Aptitude MooAptitude-v MooAPTITUDE-VV MooAPTITUDE-

Learn the C + + book listTurn fromHttp://stackoverflow.com/questions/388242/the-definitive-c-book-guide-and-listBeginnerintroductoryIf you were new to programming or if you had experience in other languages and is new to C + +, these books is highly reco Mmended. C + + Primer * (Stanley Lippman, Josée Lajoie, and Barbara E. Moo) (updated for c++11) Coming at 1k pages, This was a very thorough introduction into C + + that covers just on everything

Angularjs is a great JS framework that enables the creation of powerful, dynamic web apps. Angularjs has been widely used in web development since it was released in 2009. But for those who want to learn angular JS, only official documents, that is not enough. Most people would like to see some introductory videos or a demo program that is easier to understand and learn. So this article recommends 10 Angularjs learning guides to help you. 1. Year of Moo