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When the attribute names in your model cannot correspond to key s in the dictionary (JSON/XML) in development, or when the dictionary is nested with multi-level dictionary arrays... And teach you how to use MJ Extension configuration classes to manage your model configuration uniformly. Here are some common special situations in dev ...

1: Optimizing the Redis Cache There are many use scenarios of redis, just one of which I use: 1.1 For a large number of data reads, in order to alleviate the pressure of the database, some infrequently changing and frequently read data are stored in redis cache. The general idea is as follows: execute a query 1.2 First of all, determine whether ...

Background: Understanding Python basic grammar and a few regular expressions can be said to be about zero - based. This should be a series, which is equivalent to recording my notes on crawler-related technical knowledge. It's very basic.~~ Language: Python 3.6 Environment: Win7 The working principle of the crawler is understood. The crawler is ...

Preface About the Android ORM framework, I wrote about the use of GreenDao before, in an article by Amway. Android database framework: green DAO vs LiteOrm It is very convenient and efficient to use LiteOrm, especially in cascading queries, which is very convenient and object-oriented. Well, LiteOrm is not OrmLite. The main use of it is to ...

_has been trying to understand what runtime is about, because it is a necessary question in the interview, but usually the opportunity is really very few, I once thought that runtime is only used to install 13 sharp tools, no eggs. But as learning increases, it turns out that runtime is really useful, but not so mysterious. I am sure you will h ...

This section focuses on the question of how to cancel or close a thread in Java. Cancel/Close Scenario We know that after starting a thread through the start method of the thread, the thread starts to execute the run method. After the run method runs, the thread exits. So why end a thread? There are many situations, such as: Many threads opera ...

Welcome. My column Check out a series of articles. The previous chapter is an overview, which introduces the original intention and use of event binding. Through understanding, we can know what kind of process is inside it, from which function to which function. Whether the source code of jQuery is simple or complex, it is certain that jQuery i ...

Welcome. My column Check out a series of articles. This time I'm going to introduce the event delegation about jQuery. But before that, it's necessary to understand the event delegation and bubbles in JS. I've written similar blogs before. Event Bubble and Capture Introduced by JS events Events are very dynamic content in JS DOM. You can monit ...

Involved in: drawing circles, drawing rectangles Translation and staggering of canvas Attribute animation Effect display The circle that makes you dizzy Hula hoop "Windmill" Mouse click View to open attribute animation, and close animation when click again 1. Implementation of CircleCircleView for Vertig ...

Start akka cluster with ConstructR Akka cluster has two startup modes. One is to join the node manually (in akka, the node is called Node); the other is to specify seed nodes in the configuration. Seed node is the communication node of the cluster, which is used to create and elect the cluster. Usually we configure a series of seed nodes in the ...