JAVA-IO streaming advanced NIO

NIO Java NIO (New IO) is a new IO API introduced from Java version 1.4. NIO has the same function and purpose as the original IO, but it is used in a totally different way. NIO supports buffer oriented, channel based IO operations. NIO will read and write files in a more efficient way. Main differences ...

Added by Bill H on Tue, 16 Jun 2020 10:48:24 +0300

Multi threshold image segmentation based on genetic algorithm

catalog 1. Summary 2. Introduction 3 Otsu threshold segmentation 3.1 classical Otsu method 3.2 Otsu method with multiple thresholds 3.3 multi threshold Otsu method 2 4 genetic algorithm design 4.1 individual code 4.2 mating operation 4.2.1 single location and single point crossing 4.2.2 mu ...

Added by tigomark on Sun, 14 Jun 2020 11:27:50 +0300

shell script exercises

1. Count the number of files under / var/log. //find /var/log -type f | wc -l; 2. How to output the running result of F1.txt file to F2.txt? // ./F1 > F2.txt shF1 > F2.txt; 3. Write a script to judge which ip addresses are currently online in the 192.168.1.0/24 network, and ping the gen ...

Added by brbsta on Sun, 14 Jun 2020 05:18:43 +0300

Kolla ansible deployment of all in one single node openstack

About kolla ansible kolla's mission is to provide production level, out of the box delivery capabilities for the openstack cloud platform. kolla's basic idea is that all services are containers. All services are run based on docker, and one container can run only one service (process), so as to run do ...

Added by randomthinker on Sat, 13 Jun 2020 11:25:04 +0300

[source code analysis and design mode 12] command mode

1, Basic introduction 1. In software design, we often need to send a request to some objects, but we don't know who the receiver of the request is or what the requested operation is. We just need to specify a specific request receiver when the program is running. At this time, we can use the command ...

Added by Simbachips on Fri, 12 Jun 2020 12:05:51 +0300

Data insight | Python interpretation stall - do you want to set up a stall to sell anything?

I know there is a problem: after the epidemic, what is the most thing you want to do?   Many people study python and don't know where to start.Many people learn python, master the basic syntax, do not know where to find cases to start.Many people who have already done cases do not know how to learn more advanced knowledge.Then for these three t ...

Added by Chafikb on Fri, 12 Jun 2020 10:42:28 +0300

[complete version] usage record of YOLOv3

Xiaobai wrote systematic articles for the first time, but his technique was poor, mainly for the convenience of his later search. I hope all the gods don't like light spray~~ There are 7 complete versions of the main documents at the end of the article. Please refer to them if you like~ 0 organization ...

Added by kristianblom on Thu, 11 Jun 2020 08:32:33 +0300

numpy learning notes of python 01

WeChat official account: click on blue font, small white image and visual attention. About technology, focus on yyfilence00. If there are any questions or suggestions, please official account message. Organize knowledge and learn notes Publish journal, essay, what you see and what you think 1: ...

Added by markmuir on Wed, 10 Jun 2020 07:57:14 +0300

Docker network (docker learning notes)

Article catalog 1. Configure container network 2. Access containers through port mapping 3. Configure container interconnection 4. Create a point-to-point connection 1, Task description 1. Learn about Docker container network and how to configure basic network, including how to create network name ...

Added by nicephotog on Wed, 10 Jun 2020 07:51:06 +0300

Graphic io+BIO+NIO+AIO+Netty + chat room practice

The beginning of 2020 is extraordinary. I will stay at home and study io again io is divided into bio,nio,aio Among them, netty belongs to nio, and aio has not been widely used, so it has great potential in the future Understand several concepts Synchronous and asynchronous Blocking and non blockingio m ...

Added by PW on Wed, 10 Jun 2020 06:42:48 +0300