apply function

The design of MapReduce is inspired by functional programming, which is not intended to mention MapReduce, and takes the map () function in Python to learn.The documentation is described here:Map (function, iterable, ...) Apply function to every

When you begin to invoke data asynchronously with a For loop, it is discovered that asynchronous execution occurs after the for loop. Of course, the results are not what I want to get.In general this situation: we can solve the problem by the

This article mainly introduces the javascript running mechanism this. If you need it, you can refer to this as an important keyword in object-oriented language, understanding and understanding the use of this keyword is critical to the robustness

The following details the differences between the context and scope in javascript and how to use them in various design patterns. Do not miss the scope and context in javascript) is the uniqueness of the language, thanks in part to the flexibility

Once ECMAScript 4 suggested that this feature would be added to the ES4 specification, but later in the discussion of the ES4-discuss mailing list, this suggestion could be abolished.However, you can add the call and apply methods to the similar

BodyFor a fine line, you must first pass 10 lines.In the front-end development of this field, skill is very necessary.Table Layout Disadvantages: Large code volume, structure confusion; Tag semantics are ambiguous and unfriendly to

Yesterday I tried a series of suspicious module interception (http://www.bkjia.com/Article/201406/310932.html) experiments, although the final solution still has some compatibility problems, but the general idea has been clear: Static module: Use

1. General use 2. This.x and apply (), call () 3. Meaningless (weird) this use 4. This in the event listener function 5. Summary The this variable is an elusive keyword in JavaScript, and this is a very powerful, well-understood

1.DOM operations-How do I add, remove, move, copy, create, and find nodes?1. Create a new nodeCreatedocumentfragment ()//Create a DOM fragmentCreateElement ()//create a specific elementcreateTextNode ()//Create a text node2. Add, remove, replace,

Our browser detects a wait event, such as a user's behavior, if you click on a button or write something in input,The callback for the event will run in the built-in JavaScript and you will be able to do some DOM operations.So when the callback

Http://www.cnblogs.com/batteryhp/p/5006274.htmlPandas is the preferred library for subsequent content in this book. The pandas can meet the following requirements: Data structure with automatic or explicit data alignment by axis. This

$apply () and $digest () are two core concepts in angularjs, but sometimes they are confusing. To understand how ANGULARJS works, you first need to understand how $apply () and $digest () work. This article is intended to explain what $apply () and $

// Create an object. The object name must be Ext.EXT = {version: '2. 0.1 '};// In the browser before ie5, undefined is not the sub-object of Windows Object. Window. undefined = undefinedWindow ["undefined"] = Window ["undefined"];// A kind of method

Apply function to range Applies FunctionFNTo each of the elements in the range[first,last). The behavior of this template function is equivalent: 123456789 templateclass InputIterator, class Function> Function for_each(InputIterator

From the library perspective, ext (a friend who likes Chinese can visit its Chinese site) is not much different from prototype jquery Yui, but it has its advantages, complete oo support, mature general-purpose widgets, and support themes, good

Function Name Function fun () {alert (123);} fun (); // 123f = function () {alert (123);} f (); // 123msg = alert; MSG (123); // 123 Function return value Function fun () {var num = 1; return num; // the function can have no

Previously, when we used MATLAB for image processing, we used the functions to check the functions. We never summarized them systematically, but we had to check them again. Therefore, it is necessary to summarize them ~For convenience, only the

Function name and function pointer I. Common function callsAn example of a common function call:// Self-contained header filesVoid myfun (int x); // The statement can also be written as void myfun (INT ); Int main (INT argc, char * argv []){Myfun (10

Document directory 10.5 version: updatestats () 10.6 version: getoverlappinginputs () 10.7 version: overlapinlevel () 10.8 version: picklevelformemtableoutput () Conclusion 10.9 10 version analysis 210.5 version: updatestats () If the get

The use of call in Javascript is quite tangled. It is difficult to determine whether you really understand it based on the document. Call MethodApplied to: Function objectsCall a method of one object to replace the current object with another object.