[Analysis of C++11] std::function and std::bind

Catalog [Analysis of C++11] std::function and std::bind std::function callable object wrapper std::function basic usage std::function/std::bind and some thoughts on abstract factory and factory method [Analysis of C++11] std::function and std::bind std::function callable object wrapper C+ ...

Posted by JimD on Sat, 03 Aug 2019 05:46:30 +0200

Data Path - Python Crawler - Xpath

Introduction of XML What is XML? XML refers to EXtensible Markup Language XML is a markup language, much like HTML XML is designed to transfer data, not display it XML tags need to be defined by ourselves. XML is designed to be self-descriptive. XML is the recommended standard for W3C W3School Official Documentation: http://www.w3scho ...

Posted by robkir on Fri, 02 Aug 2019 20:49:05 +0200

JAVA Basic Packaging

encapsulationObject-oriented has three characteristics: encapsulation, inheritance and polymorphism.encapsulationPackaging performance:Method is a basic package.Class is also an encapsulation.From the above two points, it is concluded that the benefits of packaging are:1. Enhanced code reusability.2. Hide the implementation details and provide ...

Posted by nicx on Fri, 02 Aug 2019 05:48:38 +0200

ReactRedux for Front End Notes

1. Redux Global Perception Redux is a JavaScript state management container that provides a state management container for predictable states.From Flux, Facebook launched the Redux Library in 2015. Chinese website: http://www.redux.org.cn/ Official git: https://github.com/reduxjs/redux   First, you'll reference the redux.js package, which ...

Posted by johnbest on Fri, 02 Aug 2019 04:00:42 +0200

redis elementary tutorial

Introduction to redis REmote DIctionary Server(Redis) is a key-value storage system written by Salvatore Sanfilippo.Redis is an open source, ANSI C-language, BSD-compliant, network-enabled, memory-based and persistent log, Key-Value database, and multilingual API.It is often referred to as a data structure server because values can be of typ ...

Posted by lasse48 on Fri, 02 Aug 2019 03:58:44 +0200

The fifteenth Generic of Java Foundation

Chapter 15 Generics General classes and methods can only use specific types: either basic types or custom types. If you want to write code that can be applied to many types of code, this rigid restriction will impose great constraints on the code. In object-oriented programming languages, polymorphism is a generalization mechanism. Generics imp ...

Posted by jbog91 on Thu, 01 Aug 2019 04:39:13 +0200

Integrated use of SpringBoot RabbitMQ

premise Last time I wrote an article, Integrated Use of SpringBoot Kafka And read a lot, so think about integrating several other MQ s with SpringBoot. Here are four popular MQ s: Write an integrated article with SpringBoot later. Install RabbitMQ Some environments are built directly in Mac because of a Mac change, but installing Rabbi ...

Posted by eva21 on Wed, 31 Jul 2019 20:57:52 +0200

CodeChef Exercise (day1)

A - Xenny and Alternating Tasks Problem surface Title Solution Enumerate who did it on the first day and take the two answers to (min). Code #include <iostream> #include <cstdio> #include <cstdlib> #include <cstring> #include <algorithm> #include <cmath> #include <cctype> #define gI gi #define itn int # ...

Posted by jkatcher on Wed, 31 Jul 2019 20:04:35 +0200

Laravel combines with Wang Editor 3 rich text editor to publish articles and upload multiple pictures

Write in front Define routing Route::post('article/image/upload', 'ArticleController@imageUpload'); (2) Modify the configuration file config/filesystems.php, the other defaults will be fine. // 'default' => env('FILESYSTEM_DRIVER', 'local'), 'default' => env('FILESYSTEM_DRIVER', 'publi ...

Posted by lordphilippe on Wed, 31 Jul 2019 14:02:15 +0200

Python_Process Control and Data Junction Structure

Process Control - --------------------------------------------------------------------------------------------------------------------------------------- Conditional Judgment Grammar: # Single branch if <condition>: <Execution code block> # Multi-branch if <condition1>: <Execution block 1> elif <condition ...

Posted by Devsense on Wed, 31 Jul 2019 10:43:49 +0200