Qt Write 8-Curve Monitoring for Gas Safety Management System

1. Preface Curve monitoring module is rarely used, mainly to observe the real-time data collected by a device and the data collected by history, you can play back the data, you can select the corresponding communication port and controller on the right side, then select the specified detector to observe, from the time of selection to start timi ...

Posted on Sat, 16 Nov 2019 00:54:47 -0500 by punky79

Android Network Programming Details

1. Basic concepts of networks and Http protocol IP address and port number IP Address: All flattering computers in the network must have a unique IP address as their identity, consisting of a set of decimal digits separated by'. ' Port number: An IP address only guarantees that key data will be sent to the specified computer, but it is not kno ...

Posted on Fri, 15 Nov 2019 22:51:11 -0500 by Vorotaev

FileStream related knowledge sharing

1. How to Understand FIleStream Through the first three chapters, I believe you already know something about Stream, but how do you understand FileStream?Look at the following picture:   Every file on our disk is made up of a binary array. The most intuitive is Notepad. When we create a new Notepad, it will be 0KB in size. Each time we ent ...

Posted on Fri, 15 Nov 2019 19:52:05 -0500 by gorskyLTD

The sum of two numbers in the first question of leetcode beat 98.11% of users' answers (C + +)

Although the topic is simple, it's not easy for me to optimize to the top 2%. I feel it's worth sharing with you   Title: Given an array of integers nums and a target value target, please find the two integers with and as the target value in the array and return their array subscripts. You can assume that each input corresponds to only one ...

Posted on Fri, 15 Nov 2019 12:46:22 -0500 by zarp

The experience of a nginx implementation to forward requests based on URL s

The experience of a nginx implementation to forward requests based on URL s Because we have completed the internal and external deployment of a distributed file system for a long time, using fastdfs, the application is deployed to port 8088, and its background management system is deployed to port 8089 (the same internal server). The service of ...

Posted on Fri, 15 Nov 2019 01:21:49 -0500 by FFFF

Matlab bp neural network

I. workflow 1. Load data to generate training set and test set (verification set) First load the sample, where the input of the sample is called feature (variable), and the output value is called ideal value. Divide the sample into training sample (used for learning) and test sample (used for effect test simulation) Note tha ...

Posted on Thu, 14 Nov 2019 12:22:15 -0500 by badman

Android 9.0 system UI network signal bar customization and modification

previously on Analysis of loading process of system UI navigation bar of Android 8.1 platform 9.0 brief description of change point 1. Add StatusBarMobileView instead of SignalClusterView to control signal bar display At the same time, StatusBarIconView and statusbarwifi are added 2. The overall process is similar to 8.1 Design sketch Overall ...

Posted on Thu, 14 Nov 2019 09:58:09 -0500 by Coinnoch

YUM warehouse service and PXE network installation of Centos7

Bowen catalogueI. YUM software warehouseII. Type of YUM sourceIII. precautions for configuration of PXE automatic bulk chemical installation machineIV. deploy PXE remote installation service I. YUM software warehouse With the help of YUM software warehouse, the tasks of installing, uninstalling and upgrading rpm software packages can be comp ...

Posted on Thu, 14 Nov 2019 07:10:52 -0500 by genetheblue

Portworx demonstration: migrating stateful applications and data between K8S clusters

More and more enterprises choose Kubernetes as their infrastructure, which can help us shorten the time to market of software projects, reduce the cost of infrastructure, and improve the quality of software. Because Kubernetes is relatively new, IT teams are learning how to run and maintain applications on Kubernetes in a production environment ...

Posted on Thu, 14 Nov 2019 05:53:16 -0500 by dickd

Samba service configuration details (anonymous, identity, alias, access control, mount access)

Samba Service Configuration Details Samba is a free software that implements the SMB protocol on Linux and UNIX systems and consists of server and client programs.SMB(Server Messages Block) is a communication protocol for sharing files and printers on a local area network. It provides file and printer sharing services between different compu ...

Posted on Thu, 14 Nov 2019 02:25:28 -0500 by vent