ecmascript 5 tutorial

unequal sequences, when the shortest sequence runs out of time will stop. The range function creates an entire sequence at a time, and the Xrange function creates one number at a time. 2, number iteration (enumerate function) 3. Flip and sort iterations (reversed and sorted), instead of modifying the object in situ, return the flipped or sorted version Jump out of the loop: 1, break 2, continue, let the current iteration end, "Jump" to the beginning of the next round of the cycle. That is, "ski

can throw an exception using the Raise statement. It accepts an exception class or an exception instance as a parameter, and can provide two parameters (exception and error information).　　Custom Exception classes: You can create your own exception classes by inheriting the methods of the exception class.　　catch Exception: use the except clause of the TRY statement to catch the exception. Exceptions can be placed in tuples to implement multiple exception sets. If the except is given two paramete

is:SummarizeThis article has made minor improvements to the HTML helper knowledge points used in the previous article:The custom HTML helper naming is standardized (the class name is Xxxextensions and the native form is unified);Returns the mvchtmlstring type directly so that the HTML string is not escaped and can be called directly from the front end.Custom HTML Helper is very useful, you can dig a lot of usage scenarios.Welcome all comments, wish the study progress:)P.S.In the example, the fr

closed. Test results:java : Java new 5000s waste 3ms c++ : c++ new 5000s Waste 18ms java : java new 10000s Waste 5ms c++ : c++ new 10000s waste 24ms Span class= "http" >java : java new 50000s waste 44ms c++ : c++ new 50000s waste 121ms java : java new 100000s waste 65ms c++ : c++ new 100000s waste 259ms This time, the results show that if the cache method ID and Jclass can be shortened by half the time. But still less fast than Java. It's also good to understand that C + + creat

plain text file that separates data fields (commas) and is suitable for serving as intermediaries for data import and export between databases.Here's how to remove each row of a CSV file:#!/bin/bashdeclare-i I=0for line in $ (cat cvsfile.txt) doi=i+1echo-n "The field of the first $i is:" save_ifs= $IFSIFS = ', ' for f in $linedoech O-n $f ' doneifs= $save _ifsecho doneThe For loop is also frequently used for files in the processing directory:#!/bin/bashdir= "/root" for f in $ (ls $DIR) doecho '

In Web page production, there are many terms, such as CSS, HTML, DHTML, XHTML, and so on. In the following article we will use some basic knowledge about HTML, and before you learn this introductory tutorial, make sure you have a certain HTML base. Let's start with a step-by-step use of DIV+CSS for Web layout design. All the design first step is the idea, the idea is good, in general also need to use Photoshop or fireworks (hereinafter referred to as

Asp.net| Tutorial Apply styles to HTML server controls Web is a flexible user interface environment, different sites in the visual and sensory changes in the way. Cascading styles Table (CSS) is widely used, which greatly enriches the design of the web. All asp.net HTML server controls and Web suits Service control, has been designed to provide first-class CSS style support. This section discusses how to apply styles to services Control, and demonstra

fso| Create | tutorials How to use the FSO to create a new file-fso tutorial 5 After understanding the file copy, delete, move, and rename, let's learn how to access the data in the file. The TextStream object that must be used for file access is a FileSystemObject child object. The method has two kinds of opentextfile and createtextfile, the use example is as follows:' first set up the FileSystemObject ob

Expression Blend Example Chinese tutorial (5)-Quick start of layout controls Stackpanel,scrollviewer and border The previous article describes the use of the canvas layout control in blend. This article continues to describe the layout controls Stackpanel,scrollviewer and border. Compared to grid and canvas, stackpanel,scrollviewer and border are simpler layout controls, and the functionality is relativel

The basic tutorial uses the Win32 API in the. NET Framework program through DllImport The. NET Framework program can access the native code base by means of a static DLL entry point. The DllImport property is used to specify the DLL location that contains the implementation of the external method. The DllImport attribute is defined as follows: Namespace System.Runtime.InteropServices { [AttributeUsage (AttributeTargets.Method)] public class DllImpo

be converted manually. Databaselibrary itself does not provide a conversion function, in order to solve this problem, we need to extend the databaselibrary. 3. Solve Chinese garbled problem in database library Open the query.py file under the installation directory and add a decode function to decode the string def decode (Self,customstr,mode): return customstr.decode (mode) Change the test script to increase the transcoding process Run again, get the system output, test pass Summariz

Introduction to ASP. NET 5 MVC6 series tutorial (15): MvcOptions configuration, interpretation of ASP. NET Program model processing IApplicationModelConvention InMvcOptionsThere isApplicationModelConventionsAttribute (type:List).IApplicationModelConventionInterface set for processing the application modelApplicationModelThe set is called when the MVC program is started, so we can modify or update it before

Logcat window. NBSP; When another activity is displayed before the current activity, or the Auto lock screen, the current activity is paused, The Onresume function is called when the OnPause function is called to return to the current activity. NBSP; When you return to your phone's home page, the current activity will go from Onresume state through OnPause to OnStop. Indicates that the current activity is not visible and is stopped. But when reopened, the activity is ag

(messagesourceresolvable resolvable, locale locale) throws nosuchmessageexception; For example, we define the following message in the property file[Java]View PlainCopy userdetails.islocked= user has been locked userdetails.usernotfound= user {0} does not exist Then use the GetMessage methodGetMessage ("userdetails.islocked", null,null)//user has been lockedGetMessage ("userdetails.islocked", New object[]{"admin"},null)//user admin does not existUsercache configuration, i

can be, it is also divided into two cases, if the member property inside an objectIs public, you can use this function to delete the public properties of an object outside the object, if the object's member property is private,I don't have permission to delete this function, but also if you add "__unset ()" To an object,You can delete the private member property of an object outside the object. After adding the "__unset ()" method to the object,When you use the unset () function outside an obje

("file_put_contents")){function file_put_contents ($path, $val){$fp = @fopen ($path, "w");Fputs ($fp, $val);Fclose ($FP);return true;}} $title = $lang ["title"];$earlier = 10;$description = $lang ["description"];$origroom = $room;$least = ($_get["Dis"]) intval ($_get["Dis"): $leastnum;$touchme = $_post[' Touchme ');if (!is_dir ($roomdir)) @mkdir ($roomdir) or Die ("error when creating folder $roomdir");$room = $_get[' "");if (! $room) $room = $_post["Guest"];$room = Checkfilename ($room);if

This is the first in a series of five tutorial posts on the Web Services Software Factory. the Web Services Software Factory (WSSF) is a product that has come out of the Microsoft Patterns and Practices Group and its goal is to aid you in the mundane tasks that accompany setting up a robust WCF or ASMX service. the outline of the tutorials will be as follows: Post 1: Download, Install, and Setup our Demo ProjectPost 2: Create Data Contracts and Implem

Windows File System filter driver development tutorial 5. Bind fs cdo, file system identification, device extension As mentioned in the previous section, we intend to bind a newly activated fs cdo. The front side said that simply calling wd_dev_attach can easily bind this device. However, not every time my_fs_notify finds a new FS activation, I will bind it directly. First, determine whether I need to

Tool usage in cainiao tutorial (5) -- Tomcat integration of JRebel and Windows Services I have previously written an article about using JRebel to support hot deployment-"using JRebel to support hot deployment of Tomcat". This section describes the configuration in the development and test environments. However, in the formal deployment environment, we do not start Tomcat through the command line. Tomcat is

BLE-NRF51822 tutorial 5-static password settings NordicBLE Contact Group 498676838This lecture introduces some related theoretical knowledge about pairing and describes how to set a "static password ". The program is a uart demo Based on sdk9.0 In addition, the mobile app used for testing is lightblue in IOS. The correct statement here should be a pair code, not a password. Enter this pair code as an optio