Talk about coding things, and by the way, implement base64

Catalog Conversion between binaries Arbitrary Binary Conversion of Arbitrary Binary Numbers Converting Arbitrary Number to Decimal Number Several Interview Questions on parseInt Coding History base64 encoding Why base64 is needed How to Realize base64 Read buffer to json object Convert decimal to binary Put the binary together by 3*8 a ...

Added by sherry on Fri, 06 Sep 2019 11:45:14 +0300

web Front-end Start to Practice: CSS Custom Properties + CSS Grid Grid for Super Layout Ability

One thing I've noticed recently is CSS custom attributes. CSS custom attributes work a little like variables in SASS and other preprocessors. The main difference is whether other methods are generated after compiling in browsers or the original CSS w ...

Added by MadRhino on Thu, 05 Sep 2019 08:43:11 +0300

Custom Annotation Injection Property Values (Based on Reflection and Static Variables)

Links to the original text: http://markey.cc/2019/02/16/SpringBoot%E4%B9%8B%E8%87%AA%E5%AE%9A%E4%B9%89%E6%B3%A8%E8%A7%A3%EF%BC%88%E5%9F%BA%E4%BA%8E%E5%8F%8D%E5%B0%84%E5%92%8C%E9%9D%99%E6%80%81%E5%8F%98%E9%87%8F%EF%BC%89/ This article wil ...

Added by sheffrem on Wed, 04 Sep 2019 10:41:34 +0300

JavaScript Design Patterns--Implementation and Principles of Multiple Inheritance Modes

The original text is from my personal blog site: https://www.dzyong.com (Welcome to) Link address for this article: https://www.dzyong.com/#/View... (Please label source for reload) What is inheritance Inheritance is a concept in object-oriented software technology.If one category A "inherits" from another category B, it is called a & ...

Added by peppino on Wed, 04 Sep 2019 05:16:34 +0300

In the launch file, the node and its tag contents are understood

node label Specify a ROS node in the tag, which is the most common roslaunch tag because it supports the most important function: start and close the node. roslaunch does not guarantee the order in which nodes start. Since there is no way to know fro ...

Added by fire_cracker on Tue, 03 Sep 2019 17:03:21 +0300

Introduction to web Front-end to Practice: Five Ways to Detail CSS Three-Column Layout

Topic: Assuming the height is known, please write out three columns layout, in which the width of left column and right column are 300 px, and the middle column is adaptive. Five schemes for three-column layout This is a classic interview question. ...

Added by fleabel on Tue, 03 Sep 2019 16:21:02 +0300

How "React Hooks" uses 120 lines of code to implement an interactive drag-and-drop upload component

Preface In this article, you will learn: How to rewrite existing components to React Hooks function components How does useState, useEffect, useRef replace the original life cycle and Ref? Four events covered by a complete drag-and-drop upload be ...

Added by drak on Tue, 03 Sep 2019 13:20:30 +0300

Testing JavaScript with Jest (2019)

Author: Valentino GagliardiTranslator: Crazy Technology House Original: https://www.valentinog.com/bl... Reproduction is strictly prohibited without permission What does testing mean? Testing in technical terms means checking whether our code meets certain expectations. For example, given some input, a function called "transformer" s ...

Added by slionheart on Mon, 02 Sep 2019 06:18:29 +0300

Look at React-Redux Source with Questions (14,000-word long alert)

Welcome to the Public Number: One front end at a time, sharing what I understand on an irregular basis Write before While I was reading React-Redux source code, it was natural for me to go online and find some reference articles, but I found that n ...

Added by flyersman on Mon, 02 Sep 2019 04:46:11 +0300

Java Development Notes (144) Controller for implementing FXML

Previously, how to lay out the interface through fxml file is described. However, static interface can not handle business at all. Code of business logic must be written separately to respond to button click events and present business results even on the interface.Obviously, no Java code can be written inside the fxml, and the entry program ha ...

Added by Gwayn on Sat, 31 Aug 2019 09:44:42 +0300