Programmer Think

Python 3 solves many problems of Python 2, such as GIL (Global Interpreter Lock), and introduces many powerful libraries as native libraries. Among them, asyncio libraries are a bright spot, which can be said to be the libraries Python 3 must understand. Understand the asyncio library: https://www.c ...

D. Suitable Replacement Topic: In the S string? Convert to lowercase letters, so that string S has the largest number of disjoint strings of string T, (letters in S can be exchanged in order) Solution: Greed #include<bits/stdc++.h> #define mp make_pair using namespace std; typedef long long ll; t ...

Cookie Get Cookie request.COOKIES['key'] request.get_signed_cookie('key', default=RAISE_ERROR, salt='', max_age=None) The parameters of get_signed_cookie method: default: default value Salt: Encrypted salt max_age: Background control expiration time Set Cookie rep = HttpResponse(...) rep ＝ render(request, ...) rep.set_cookie(key,value,...) ...

The book Design Patterns, co-published by GoF, provides many solutions to common problems in object-oriented software design. These models have been around for quite a long time and have proved very useful in many cases. Monomer mode There is only one instance of a particular class. This means that the second time you create a new object with t ...

Background Ali's RicketMQ has been castrated in previous versions and re-added in the new version to solve the problem that small companies are unable to make reliable messaging middleware products. At the same time, RocketMQ also refers to the Kafka implementation, and its performance is very good. Version 2 <dependency> <groupId& ...

Now there's a requirement: initialize the toolbar in the android interface based on the json passed from the page. So use JsBridge Implementation'com.github.lzyzsd: jsbridge: 1.0.4'//js and android interaction framework Import the JsBridge project, add a webview to the layout, and then come to th ...

Links to the original text: https://my.oschina.net/kooksee/blog/542430 python Notebook Programming Style Competition Although my python age is not very high, I would like to share ...

Article directory 1. js array 2. Functions of JS 3. Global and local variables of JS 1. js array 1.Definition: (1)var arr = [1,2,3]; var arr = [1,"4",true]; (2)Using built-in objects Array var arr1 = new Array(5);//Define an array with an array length of 5 arr1[0] = "1"; (3)Using built-in obje ...

order This article mainly studies dubbo's Connection Ordered Dispatcher. ConnectionOrderedDispatcher dubbo-2.7.3/dubbo-remoting/dubbo-remoting-api/src/main/java/org/apache/dubbo/remoting/transport/dispatcher/connection/ConnectionOrderedDispatcher.java public class ConnectionOrderedDispatcher implements Dispatcher { public static final Stri ...

1. Exploring attributes Before doing data analysis, we need to understand our data, then how to view the attributes of the data, the operation is as follows: a=np.arange(8) print(a) # Print array print(a.ndim) # Rank 1 print(a.size) # Eight elements in the whole array print(a.shape) ...