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Python in __init__ (), __new__ (), __call__ (), __del__ () usage

shipment is the product of the production department, since the manager can sell the product to the customer in the name of the plant, which is not the factory at all.# Encoding:utf-8class A (object): def __new__ (CLS, x): print ' This was in a.__new__, and X is ', X return Super ( A, CLS). __new__ (CLS) def __init__ (self, y): print ' This is in a.__init__, and Y is ', Yclass C (object): def __ new__ (CLS, n): print ' This was in c.__new__, and N is ', N

Python Socket Network Programming detailed _python

= (' 127.0.0.1 ', 800 0) Sk.connect While TRUE:INP = input (">>>") if InP = = "Exit": Break Sk.send (Bytes (INP, ' UTF8 ')) Result_len = Int (str (SK.RECV (1024), ' UTF8 ') print (result_len) data = bytes () while Len (data)!= RESULT_LEN:RECV = s K.RECV (1024) data + + recv print (str (data, ' GBK ')) Sk.close () File Upload Server Import socket import os sk = Socket.socket () address = (' 127.0.0.1 ', 8000) Sk.bind Sk.listen (3) Base_dir = Os.path.dirname (Os.path.abspath (__fi

Native JS for Ajax

= new XMLHttpRequest (); Xhr.open ("POST", url, true); Add HTTP headers, send information to the server when the content encoding type xhr.setrequestheader ("Content-type", "application/x-www-form-urlencoded"); Xhr.onreadystatechange = function () { if (xhr.readystate = = 4 (xhr.status = = | | xhr.status = = 304)) { C21/>fn.call (this, xhr.responsetext); } ; Xhr.send (data);} }Comments:1. The open (method, URL, async)

Vue.js The computational attributes _javascript skills of the tutorial

Vue.js's inline expression is convenient, but its most appropriate use scenario is a simple Boolean operation or string concatenation. If more complex logic is involved, you should use the computed attribute. The computed property is used to declare the description of a value that relies on other values. When you bind data to a computed property in a template, Vue updates the DOM when any value it relies on causes the computed property to change. This is a powerful feature that makes your code

Use observer mode to get data from threads or callback functions __ functions

fully demonstrated public Testthread (Watcher Watcher) { this.watcher = watcher; } public void Run () { watched concretewatched = new concretewatched (); Concretewatched.notifywatchers (Watcher, "I am:" + hashcode ()); } public class Test {public static void Main (string[] args) { watched girl = new concretewatched (); c21/>//the viewer into the queue watcher Watcher1 = new Concretewatcher (); Girl.ad

JQuery Ajax global functions handle the AJAX jump problem after session expiration _jquery

= Response.getwriter (); Printwriter.print ("{sessionstate:timeout}"); Printwriter.flush (); Printwriter.close (); } else{ //Not AJAX request, direct jump page } The second step is to set up a global Ajax processing event to handle the session expiration problem, similar to an interceptor or filter: $.ajaxsetup ({ contentType: "Application/x-www-form-urlencoded;charset=utf-8", Cache:false, complete : function (data,ts) { //to judge the data returned, //session expires, loc

A two-dimensional code _android based on Android to realize the beautiful color of personality

(intent.flag_activity_new_task); StartActivity (Intent.createchooser (Intent, GetTitle ())); Send to friends Effect chart: Then it is to implement the functionality saved to this map library: /** * First save to local and broadcast to gallery */public static void Saveimagetogallery (context, Bitmap BMP) { //First save picture C5/>file appdir = new File (Environment.getexternalstoragedirectory (), "code"); if (!appdir.exists ()) { appdir.mkdir (); } String fileName = "qrcode.jpg

Ext.tree How to create a tree and dynamically load a tree

({ el: ' Tree2 ',//target div container autoscroll:true, animate:true, enabledd: True, height:350, containerscroll:true, loader:new Ext.tree.TreeLoader ({ dataurl: ' Requested pages ' , Method: ' Get ' }, listeners: { "click": Function (node, event) {//leaf node Click Do not enter link if (node.isleaf ()) {/ /Show leaf node menu event.stopevent (); Allevents (node); else {//is not a leaf node does not trigger event event.stopevent ();//When Clicked expand Node.toggle ();}}}); var

An example of rounded corners with CSS

css| Round Corner HTML code Css: /* Start-first Example *//////Set millions of background images * * . rbroundbox {Background:url (images/c00.gif) repeat;} . rbtop Div {background:url (images/c11.gif) no-repeat top left;} . rbtop {Background:url (images/c12.gif) no-repeat top right;} . Rbbot Div {background:url (images/c21.gif) No-repeat bottom left;} . Rbbot {Background:url (images/c22.gif) No-repeat bottom right;/* height and width stuff, width

Several ways to implement threads __ Threads

{ @ Override public Void Run () {while (true) { try { thread.sleep (1000);/Hibernate 1000 milliseconds (1 seconds) } catch ( Interruptedexception e) { e.printstacktrace (); } System.out.println ("Print Current thread name:" +thread.currentthread (). GetName ()); } Demonstrates calling public static void Main (string[] args) { thread theard=new thread (new ThreadTest

Event Distribution Source Flow _ event distribution from click Screen to event handling

void apply (queuedinputevent q, int result) { if (result = = FORWARD) { FORWARD (q); } else if (result = = finish_handled) { finish (q, True); } else if (result = = finish_not_handled) { finish (q), FALSE); else { throw new illegalargumentexception ("Invalid Result:" + result); } Then forward (q); Throws the event down one stage protected void forward (Queuedinputevent q) { ondelivertonext

Follow the example learning design pattern (7)-prototype mode prototype (create type)

Main (string[] args) { C21/>resume Resume = new Resume (); Resume.setname ("Gao Xu"); Resume.setmobile ("1390000111"); Resume resume1 = (resume) resume.clone (); Resume resume2 = (resume) resume.clone (); System.out.println (Resume.tostring ()); System.out.println (Resume1.tostring ()); System.out.println (Resume2.tostring ()); } } Advantages and scenarios for the prototype model: The biggest advantage is that creating objects

Management and application of Oracle external tables

Tags: Oracle external table Index Insert UpdateExternal tables as a table type of Oracle, although not as easy as normal library tables, but sometimes in the data migration or data loading, it also brings great convenience, sometimes more convenient than loading data with Sql*loader, the following will establish and apply external Table command and operation record as follows: --Create directory objects that store files Sqlplus Username/[email protected] Create directory Ex_data as '/home/ex_dat

A long time ago, I had an SQL interview question and answer.

Today, I suddenly remembered a SQL interview question a long time ago. With the help of my colleagues, I finally realized it. I would like to express my gratitude to vivianhu (mm.The specific data of the question cannot be remembered, but the meaning is the same. It must be completed in the query analyzer. The question is as follows: The following types are available in the table classname: Classid classname1 clothes2 pants5 hats10 shoes The table pro

You can earn more

mouth is opened bigger, and these shortcomings have been solved. Of course, the customer must choose it. It seems that sometimes success is very simple, that is, as long as you open the bottle bigger! However, it is not easy to think of this. It requires the operator to focus on the customer and consider the customer everywhere. Figalamo, the world-famous shoshoes king in Florence, Italy, is also familiar with this truth. Figalamo was born from poverty and went into exile in the United States a

Complete Guide for spending time with girlfriends-funny

Preparations: 1. Accompanying items: A. One sun hat --- Prepare for a long period of high temperature work. B. sunglasses --- A) install cool; --- B) He can freely enjoy the "Humanistic" landscape around him without being discovered by his girlfriend. Note: Do not drool or have other sunglasses unable to cover the response; --- C) the complex inner activities and intense ideological struggles can be concealed during payment. C. A pair of poor leather shoes

Search for the CRLF Injection Vulnerability (HTTP response splitting vulnerability) through regular expressions _ PHP Tutorial

The regular expression is used to search for the CRLF Injection Vulnerability (HTTP response splitting vulnerability ). After detecting a site vulnerability with 360, I published an article on how to fix the vulnerability. However, many children's shoes have some problems. many children's shoes are stuck in the variable name step. after 360 is used to detect site vulnerabilities, an article is published to

Php array -- load server files into an array and display it as a web page

Php array -- load server files into an array and display it as a web page. First, the server has an orders.txt file. Load the file into an array and display it. create vieworder2.php Customer orders Orders from our store customers No order information. please try again!";} Echo" Order Date Men's wear Shoes Glasses Total Shipping Address "; For ($ I = 0; $ I

M Product Development log (4)-project business trip

great if you would like it. Well, you should also come out for a walk. I will negotiate with the personnel here .". After a while, the doctor called me and told me that he could use the past 1 ~ Two people help with research. Kaka immediately searched for the relevant personnel in his mind. In a short time, the two major accounts will have been prepared and will wait for the phone to confirm. It's a weekend. I don't know what the two are doing. Please send me a text message. The first one is t

HDU4451Dressing (count)

HDU4451Dressing (count) HDU4451Dressing (count) Question Link N pieces of clothing, M trousers, and K pair of shoes. Now there is an unreasonable combination of P (clothes, trousers, pants, and shoes ), it is required that you do not need to use a combination of three pieces of clothing, trousers, and shoes. Solution: if an unreasonable matching solution is provi

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