Programmer Think

brief introduction The basic notes introduce the basic problems such as data type and file operation. If you want to know more, you can take a look at the interviewThe advanced part mainly includes object-oriented idea, exception handling, iterator, generator and coroutine object-oriented Python has been an object-oriented language since ...

0. Summary 1.CountDownLatch refers to one thread waiting for other threads, and CyclicBarrier refers to multiple threads waiting for each other; 2.CountDownLatch is the count - 1 until it is reduced to 0, and CyclicBarrier is the count + 1 until it reaches the specified value; 3.CountDownLatch is disposable and CyclicBarrier is recycled; 4.Cyc ...

Review: UC growth path 1 UC growth path 2 UC growth path 3 UC growth path 4 UC growth path 5 UC growth path 6 UC growth path 7 UC growth path 8 1, Registration of last words function atexit(3) review UC growth path 8on_exit(3) #include <stdlib.h> int on_exit(void (*function)(int , void *), void *arg); //Function: register the last word ...

JDK source code learning 06 currenthashmap analysis The principle of CurrentHashMap is very complex. You can only record what you understand. As we all know, the thread safety implementation principle of CurrentHashMap is Synchronized+CAS. Now let's take a look. Brief reading of notes * Overview: * The main design goal of this hash table is ...

In the process of writing this article, we refer to the content of the course "Introduction to Python Programming and data science" by Mr. Hu Junfeng. Concept: Multiple tasks should be carried out simultaneously at one time, but not necessarily at the same time.Parallel: promote multiple tasks at the same time in a period of time, a ...

lock_guard Class lock_guard is a mutex wrapper that provides a convenient RAII style mechanism for occupying mutexes during scope blocks. Create lock_ When the guard object, it attempts to receive ownership of the given mutex. Control leave create lock_ Destroy lock when the scope of the guard object_ Guard and release mutex. lock_ The guard c ...

day09 [thread status, wait and wake-up, Lambda expression, Stream flow] Today's content Multithreading Thread status -------- -- > must be masteredWaiting for wake-up mechanism -------- must be mastered Lambda expression Usage scenarios of Lambda expressions -------- -- > it is recommended to masterFormat of Lambda expression (sta ...

Producer consumer model Concept of producer consumer model Producer consumer model is to solve the strong coupling problem between producers and consumers through a container. Producers and consumers do not communicate directly with each other, but communicate through this container. Therefore, after producing data, producers do not ...

1. Circular printing public class OutWord { private String word = "output A"; public synchronized void outA() throws InterruptedException { if (word.equals("B output")){ this.wait(); } //Output word System.out.println("word = " + word); word="B output"; this.notify(); } ...

Catalogue 1. Usage scenario of queue class 2. queue class 2.1. queue class constructor 2.2 queue class attributes and methods 3. queue.Queue usage scenario 3.1 creating queues 3.2 use the methods of empty(), full(), qsize() to check the queue status 3.3 use put(), put_ The nowait () method is inserted into the queue 3.4 using get(), ge ...