Programmer Group

1. Brief introduction of shallow copy and deep copy Shallow copy: although two objects have the same properties after being copied, they all point to the same memory space let a = {x: 123} let b = a b.x = 234 console.log(b) // {x: 234} console.log(a) // {x: 234} . operation will cause reference and change of variables ...

Swift network request data viewController import UIKit class ViewController: UIViewController,UITableViewDataSource,MJRefreshBaseViewDelegate { //Table attribute var table:UITableView? var tableDataArr:[News]? var mjHeaderView:MJRefreshHeaderView? var mjFooterView:MJRefreshFooterView? var st ...

Today, I saw a music interface on the Internet. It happened that some music needed copyright to be heard, so I was ready to toss import java.io.BufferedReader; import java.io.InputStream; import java.io.InputStreamReader; import java.net.URL; import java.util.Scanner; import org.json.JSONArray; import org.json.JSONObject; pub ...

1.socket server building ideas 1) Objective: to understand the working mechanism of socket server 2) Idea: create socket - > Add socket to connection pool - > process receiving information - > handshake action - > send information   2.socket server code Note: copy to php file, direct command line can run, no other support is requi ...

After ajax validation, the form is submitted. Be careful: (1) The form in html cannot use submit, but button, (2) At the same time, the id and name of the button cannot be "submit", otherwise it will fail. (3) Form needs an ID (for example, id = "formid") to find the corresponding form in ajax. Code in ...

Project uses custom FastJsonHttpMessageConverter for API data response JSON converter In the original version of springboot1.X, it can take effect. The configuration is as follows: /** * Instead of using FastJson to parse the returned results */ @Override public void configureMessageConverters(List<HttpMessageConver ...

What is API: API (Application Programming Interface) is a pre-defined function, which aims to provide the ability of application program and developers to access a set of routines based on a certain software or hardware without accessing the source code or understanding the details of internal working mechanism. In short, API ...

Get ready Install: pip install flaskFlask Quick start: http://docs.jinkan.org/docs/flash/quickstart.html "QuickStart" Rapid construction Build in the project root directory: webapp package directory, where the flash code is stored. There is a "init. Py" file in the package templates directory to store template files Stati ...

First of all, what Xiaguan said on the Internet Execute GET request // Make a request for a user with a given ID axios.get('/user?ID=12345') .then(function (response) { console.log(response); }) .catch(function (error) { console.log(error); }); // Optionally the request above could also be done as axios.get( ...

1. User login Knowledge points: Configuration page (page,window,tabBar) Life cycle (judge whether the user exists in onLoad) Event binding (login button, input input input box) Data transfer Step 1: prepare the basic page (index user login). wxml //login.wxml <text>User name</text> <input bindinput='user ...