JS study notes - - day05

this points to this points to the object: 1. When called as a normal function, this points to the window object 2. When called as an attribute of an object, whoever calls this points to whoever 3. In the constructor, this points to the object created by the constructor Change the method pointed to by this 1.call method function.call(argument ...

Posted by ricroma on Wed, 28 Dec 2022 04:07:01 +0300

Detailed records of java and python calling matlab programs

Background Regarding Java and Python calling matlab programs, there are many related articles on the Internet, but the quality is not good, and some prerequisites are not introduced. If you follow his steps, he succeeds, but you fail. You are very confused.I think it is difficult for us to search for something now because some people write ...

Posted by mikebr on Wed, 28 Dec 2022 03:31:29 +0300

FastAPI from entry to actual combat - Hello World (installation and operation)

This article records in detail the local installation and operation of FastAPI, which is very simple, and mainly records and verifies some features. Install FastAPIThe installation is very simple, you only need to install two packages:FastAPIpip install fastapicopyuvicorn - Server for loading and serving applications.pip install uvicorncopycr ...

Posted by bestrong on Tue, 27 Dec 2022 14:58:11 +0300

Comparison of PyTorch's Dataset and TorchData API

Deep neural networks take a long time to train. Training speed is affected by factors such as model complexity, batch size, GPU, size of training dataset, etc.In PyTorch, torch.utils.data.Dataset and torch.utils.data.DataLoader are commonly used to load datasets and generate batches. But starting with version 1.11, PyTorch introduces the TorchD ...

Posted by psychowolvesbane on Tue, 27 Dec 2022 05:47:13 +0300

Node.js in Action Chapter 3 What is a Node Web Program 3.3 Adding a Database

Node.js in action Chapter 3 What is a Node Web Application 3.3 Add database As far as adding a database to a Node program is concerned, there are no mandatory rules, but generally the following steps are involved. Decide which database system you want to use.Check out popular modules on npm that implement database drivers or object-rela ...

Posted by garygay on Tue, 27 Dec 2022 03:38:58 +0300

Graduation project Intelligent access control system based on single chip microcomputer

1 Introduction Hi, everyone, the senior will introduce to you a microcontroller project made by the senior today. Access Control System Based on SCM You can use it for course design or graduation design 2 Subject background The basic components of the access control system mainly include identification, sensing and alarm, processing ...

Posted by matchew on Mon, 26 Dec 2022 00:12:46 +0300

RabbitMQ Day 1 Basics 4 RabbitMQ Working Mode 4.4 Topic Wildcard Mode & 4.5 Working Mode Summary

RabbitMQ [Dark horse programmer RabbitMQ full set of tutorials, rabbitmq message middleware to actual combat] Day 1 Basics 4 RabbitMQ working mode 4.4 Topic wildcard mode 4.4.1 Mode Description look at the documentation Compared with Direct, Topic type can route messages to different queues according to RoutingKey. It's just ...

Posted by scott532 on Sun, 25 Dec 2022 17:52:23 +0300

Redis overview installation

# Redis overview installationApplication ScenarioCooperate with relational database for cacheVarious data structures store persistent dataRedis installationinstalled versioninstallation stepsBackground start (recommended)foreground startRedis introduces related knowledgeRedis is an open source key-value storage system.Similar to Memcached, it s ...

Posted by konrados on Sun, 25 Dec 2022 10:52:01 +0300

How threads in the thread pool are reused

Preface I believe everyone knows the relationship between processes and threads. I won’t explain too much here. Since a process is composed of multiple threads, the thread pool is composed of several thread queues. The concurrency is relatively high. In some scenarios, we usually create a thread pool to perform tasks, instead of creating ...

Posted by cesarcesar on Sat, 24 Dec 2022 13:42:28 +0300

Reference counting of smart pointer shared_ptr

    Previous Article  🔗 smart pointer unique_ptr Introduced unique_ptr, and the main difference between shared_ptr and unique_ptr is that multiple shared_ptr can manage the same object, which is realized through copy constructor and reference counting mechanism. shared_ptr(const std::__1::shared_ptr<_Tp> &); shar ...

Posted by creatives on Fri, 23 Dec 2022 21:12:22 +0300