Python bit by bit accumulation

Python class Define a class Method * * init()** Python automatically runs this method whenever a new instance is created. In this method name, there are two underscores at the beginning and the end, which is a convention to avoid name conflicts between Python default methods and ordinary methods. cl ...

Posted on Fri, 19 Jun 2020 04:09:39 -0400 by vertmonkee

Two methods of closure and high frequency event performance optimization (throttling, anti shake)

Format of code development - pay attention to conflicts and dependencies There are many ways to write a project, such as modular development, namespace, closure Closure is actually a kind of writing Closure: it is a function structure unique to JavaScript (a nested use of functions) The formation of clo ...

Posted on Fri, 19 Jun 2020 00:52:31 -0400 by wpsd2006

Kago takes you to learn big data series from scratch Java Chapter 11: Enumeration

Key points of the course: Basic definition of enumeration Basic use of enumeration 11.1. Introduction to enumeration 11.1.1. The concept of enumeration Enumeration is also a custom data type, which is a reference data type. Enumeration is often used to describe data with limited value range. F ...

Posted on Thu, 18 Jun 2020 23:50:42 -0400 by jdsflash

Dynamic update of JAVA static constant non @ Value annotation based on NACOS and JAVA reflection mechanism

1. Preface Constant class files are used in projects. If the values need to be changed, the code needs to be resubmitted, or the @ Value annotation is used to realize dynamic refresh. If there are too many constants, it is also very troublesome. Can there be a simpler way to implement them? This article describes the way that a JAVA class cor ...

Posted on Thu, 18 Jun 2020 22:05:31 -0400 by Frame

Spring Learning Notes 05 - Inject Details

Injection Details There are two types of injection, as follows: Set Injection Construction Injection Set Injection Details Use the <property>tag. Injection assignments to member variables.For different types of member variables.Other tags can be nested within <property>tags. Membership ...

Posted on Thu, 18 Jun 2020 20:56:10 -0400 by derekm

Flutter learning notes (33) -- GestureDetector gesture recognition

For reprint, please indicate the source: Flutter learning notes (33) -- GestureDetector gesture recognition The main learning content recorded in this essay is GestureDetector gesture recognition, including recognition of click, double-click, long press, component drag and zoom processing. Click, double-click, long press First look at the dem ...

Posted on Thu, 18 Jun 2020 06:01:13 -0400 by ScoTi

A brief analysis of the starting process of Deno source code

start Here we start from the start of Deno to analyze: how the TS code is loaded and running, what has been done in each step; hope to give you some inspiration. Deno start Go straight to cli/main.rs Main method of: pub fn main() { ... log::set_logger(&LOGGER).unwrap(); //Set log level let args: Vec<String> = env::args().collec ...

Posted on Thu, 18 Jun 2020 04:14:48 -0400 by FirePhoenix

[ES6]Day07 - constructor and prototype, inheritance

Getting started with ECMAScript 6 (Day07) Continued: [ES6]Day06 - classes and objects in ES6 7.1.1 general In the typical object-oriented language (java), there is the concept of class. Class is the template of object and object is the instance of class. But before ES6, js did not refer to the conce ...

Posted on Wed, 17 Jun 2020 21:44:52 -0400 by Axem

labelme batch processing json files, json_to_dataset method

labelme batch processing json files, json_to_dataset method Step 1: find json_to_dataset.py file Step 2 modify json_to_dataset.py file Step 3 find labelme_json_to_dataset.exe file Step 4 switch paths Step 5: pass in the. json file path and perform the conversion complete This is the data generated ...

Posted on Wed, 17 Jun 2020 03:47:42 -0400 by jabba_29

Initial javaScript hunting

Chapter 1 Introduction to JavaScript 1.ECMAScript Core Language Functions 2.DOM Document Object Model 3.BOM Browser Object Model Chapter 2 Using JavaScript in HTML 1. <script>element Defer indicates that the script will not affect page construction during execution, that is, it will delay ...

Posted on Mon, 15 Jun 2020 21:51:23 -0400 by jscruggs