Advanced properties of thread control -- Realization of functions such as mutex and lock

Content: 1. What is one-time initialization? Example 1: one time initialization verification of pthread ﹣ once function: #include"stdio.h" #include"unistd.h" #include"sys/types.h" #include"pthread.h" #include"stdlib.h" #include"string.h" pthread_once_t once = PTHREAD_ONCE_INIT;//Declare global var ...

Posted by srdva59 on Fri, 17 Jan 2020 05:01:52 -0800

Log4j2 configuration and customization

The new requirements need to make some customized things on log4j, so the log4j2 is supplemented To configure Let's look at the traditional configuration of log4j2 <?xml version="1.0" encoding="UTF-8"?> <Configuration status="WARN"> <properties> <property name="log_path"&gt ...

Posted by fluteflute on Fri, 17 Jan 2020 03:18:16 -0800

Chapter 6 Feign parameter binding

Parameter binding stay The fifth chapter Feign is used to implement a REST service binding without parameters. However, in the actual business, it is much more complicated than this. Different types of parameters are passed in at various locations of HTTP requests, and the returned parameters may als ...

Posted by halex on Fri, 17 Jan 2020 00:55:22 -0800

[java] ConcurrentHashMap1.7 source code details

Catalog Preface HashTable and ConcurrentHashMap data structure Class Segment attribute put(K key, int hash, V value, boolean onlyIfAbsent) remove(Object key, int hash, Object value) Class HashEntry attribute Construction method Core method put(K key, V value) get(Object key) size() remove(Object k ...

Posted by juancarlosc on Wed, 15 Jan 2020 23:15:36 -0800

Spring Boot configuration unified format Result return value

In web development, the separation of front and back development has been deeply rooted in the hearts of the people. Such a development mode is very useful for the development of elegant and beautiful web applications. I have consulted some materials on the Internet and learned to use the unified format ...

Posted by bobbybrown on Wed, 15 Jan 2020 19:52:49 -0800

How easy is the Android floating window to implement?This is easy to do with kotlin!

Starting with business applications, this paper abstracts a floating window tool class from scratch that can be used to display floating windows on any business interface.It can manage multiple floating windows at the same time, and floating windows can respond to touch events, can be dragged, and have side animations. The sample code is writt ...

Posted by mrdave on Wed, 15 Jan 2020 10:33:32 -0800

Common features of vue. Form, calculated properties, custom, listener, filter, lifecycle

Form operation Form scope modifier Number: converts the form value to a number data:{ inputmsg:'123' } <input type=text v-model.number="inputmsg">//The value of this form is output as data trim: remove spaces at the beginning and end of the form data:{ inputmsg:' 123 ' } <input ty ...

Posted by OuchMedia on Wed, 15 Jan 2020 04:11:00 -0800

Implementation of TextBox with empty button (WPF)

Abstract: This blog post is for the crowd: WPF novice. Blog content: make TextBox Style template including empty Button through Style, and empty TextBox content by introducing additional attributes of custom class into Style.Purpose of the blog: to help new WPF developers or those in need to quickly und ...

Posted by aldernon on Tue, 14 Jan 2020 21:35:21 -0800

iOS underlying learning-day-16

iOS underlying learning-day-16 Preface - OC grammar problem runtime API-01 class Dictionary to model example runtime API-04 method replacement Preface - OC grammar I am an iOS developer. I am a rookie at the bottom of iOS for 30 days. problem What is Runtime? Has it ever been used in normal ...

Posted by mjs87 on Tue, 14 Jan 2020 20:46:54 -0800

tornado learning notes day06 application security

Application Security cookie Ordinary cookie What do we usually have in our user list When you are shopping, join the shopping cart and let you log in. After you log in, how does he know you are logged in The value of token is random and exists in the cookie Set up Prototype: how to set cookie s ...

Posted by zulfer on Tue, 14 Jan 2020 20:27:59 -0800