An hour to develop a Demo with Hyperledger Fabric

First understand what it is, then understand how to do it, then understand why As the beginning of the series, this paper tries to make you have a general understanding of fabric through a simple process of fabric application development. preface Put three pictures first:     The first is Gar ...

Posted by nats on Sun, 28 Jun 2020 04:01:28 +0200

ROS learning notes: Learning TF

0.TF initial experience http://wiki.ros.org/tf/Tutorials/Introduction%20to%20tf 1.Writing a tf broadcaster (C++) In the next two tutorials, we will write code to reproduce the demonstration in the tf introductory tutorial. After that, the following tutorial will focus on extending the demo with more ...

Posted by think-digitally on Sat, 27 Jun 2020 11:20:42 +0200

Cardinality sorting (Java)

Cardinality sorting (Java) Blog description The information involved in this article comes from Internet collation and personal summary, which means personal learning and experience summary. If there is any infringement, please contact me to delete, thank you! Introduction to cardinality sort (bucket sort) radix sort belongs to distribution s ...

Posted by eagleweb on Sat, 27 Jun 2020 11:09:37 +0200

LeetCode 1293. Shortest path in grid (DP/BFS)

1. Title Give you a m * n grid, where each cell is either 0 (empty) or 1 (obstacle). At each step, you can move up, down, left and right in blank cells. If you can remove up to k obstacles, find the shortest path from the upper left corner (0, 0) to the lower right corner (m-1, n-1), and return the st ...

Posted by mountaindave on Sat, 27 Jun 2020 07:38:08 +0200

June 26, 2020 - wechat applet development

title: wechat applet development date: 2020-06-26 07:45:20 tags: wechat applet categories: wechat applet development file Document address Applets provide a simple and efficient application development framework and rich components and API s to help developers develop services with native APP ex ...

Posted by ravensshade on Sat, 27 Jun 2020 04:54:14 +0200

[Distributed Lock] 03-Redisson for RedLock principles

Preface You've learned the principles of Redission reentrant locks and fair locks before, and then you'll see how Redission implements RedLock. RedLock principle RedLock is a redis-based distributed lock that guarantees the following features: Mutual exclusion: At any time, only one client can hold a lock; avoid deadlocks: When the clie ...

Posted by Shendemiar on Sat, 27 Jun 2020 02:29:15 +0200

Copy constructor of C + + (copy constructor)

Copy constructor (copy constructor) 1, Copy constructor concept Copy constructor is a special kind of constructor. When creating an object, it uses the previously created object in the same class to initialize the newly created object. Copy constructors are commonly used for: Initialize the newly cr ...

Posted by bnownlater on Fri, 26 Jun 2020 07:54:49 +0200

Source code analysis of working principle of nacos Distributed Configuration Center

nacos Distributed Configuration Center Personal Alibaba nacos Renovation Project: alibaba_nacos 1. Service Startup Configuration Loading Source: NacosPropertySourceLocator Workflow: Nacos customizes the PropertySourceLocator to get data from the configuration center at service startup, then add and re-run the local environment to load the confi ...

Posted by CanMan2004 on Thu, 25 Jun 2020 20:02:40 +0200

Docker 2020 detailed tutorial and summary

Super long warning!!! It is recommended to look at the catalogue first Introduction to docker and related cases It's not easy to summarize. If you agree, please like it~ If there is any mistake, please correct it! Docker directory Document introduction Docker overview Why does Docker appear? Docker ...

Posted by tron00 on Thu, 25 Jun 2020 05:47:30 +0200

LeNet-5 migration case of convolution neural network

Abstract: LeNet-5 is a convolutional neural network designed by Yann LeCun in 1998 for handwritten digit recognition. Most American banks used it to recognize handwritten digits on cheques. It is one of the most representative experimental systems in the early convolutional neural network. It can be said that LeNet-5 is equivalent to "H ...

Posted by lauriedunsire on Wed, 24 Jun 2020 05:54:39 +0200