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catalogue Introduction to producer consumer model wait,notify scheme Implementation of ReentrantLock Implementation of blocking queue Semaphore implementation Lockless caching framework: Disruptor Note: This article refers to [Java summary] producer consumer model_ zhujohnle's column - CSDN blog Java implementation of producer consumer ...

1, Keying status description Referring to the description on the official website, several keying states are introduced as follows: ValueState: save a value that can be updated and retrieved (as mentioned above, each value corresponds to the key of the current input data, so each key received by the operator may correspond to a value). This v ...

preface *** reference material: Deep understanding of String in Java 1, Analysis of the underlying source code of String class Let's take a look at the source code of the String class: public final class String implements java.io.Serializable, Comparable<String>, CharSequence { /** The value is used for character storage ...

Last Zero basics python programming thinking (I) | mathematical operation A small tail is left, that is, logical operation, which is supplemented and updated here first: 4: Logical operation a = 10 b = 20 if (a and b): #Boolean and: returns the value of a if a is False, otherwise returns the calculated value of b print("variable a an ...

Implementation of one-dimensional rain algorithm https://leetcode-cn.com/problems/trapping-rain-water/   def trap_rain_water(height): # Idea: whether a grid can receive rainwater and how much rainwater it can receive are determined by the highest "wall" on both sides # Traverse each grid from the second position to the pen ...

1, Random number 1. Practical cases: Write a script to generate a phoneNum Txt file, randomly generate 100 mobile phone numbers starting with 139, one line for each analysis Generate 100 phone numbers, and the script needs to cycle 100 times139 + 8 bits, the last 8 bits are generated randomly, which can generate every d ...

start A battle between job seekers and interviewers is taking place in a business building in Hangzhou. Interviewer: introduce yourself first. Angela: Hello, interviewer. I'm the three bitches in the grass, the strongest single (Daji refuses to accept), the grass motorcycle driver, the promoter of the 21st set of radio gymnastics and the suc ...

I Explanation of dns terms dns: Domain name service About client: (172.25.254.201) /etc/resolv.conf ##dns points to the file nameserver 172.25.254.101 Test: host www.baidu.com Address resolution command dig www.baidu.com Address detail resolution command A record ip The address is called domain name Addres ...

The first installment introduces the configuration of development tools introduce TypeScript introduction 1 TypeScript is an open source programming language developed by Microsoft. 2. TypeScript is a superset of JavaScript and follows the latest ES6 and Es5 specifications. TypeScript extends the syntax of JavaScript. 3. TypeScript is mor ...

Implementation and analysis of DPCM compression system I Experimental purpose Master the basic principle of DPCM codec system. Preliminarily master the experiment, program the DPCM encoder with C/C++/Python and other languages, and analyze its compression efficiency. II Experimental content DPCM is the abbreviation of differential predicti ...