Let's start the interactive operation of COS content chain!

As the leading content public chain, the code of COS public chain is all open source and free. Open source address: https://github.com/coschain/ Read the last article 0 foundation, start the localized operation of COS public chain We believe that we have set up a COS public chain locally. This time, let's open the COS public chain interaction ...

Posted on Wed, 20 Nov 2019 04:19:39 -0500 by uchacker11

Flutter can't send out a network on a Mac desktop application?

In the last article, we shared how to develop desktop applications.In this chapter, we will try to find out why the network cannot be sent out in Mac. cause The reason for this is: I always feel that writing a Demo is not enough to show our ability to develop classmates.Until recently, I found a small improvement that can help our test classmat ...

Posted on Wed, 20 Nov 2019 02:43:47 -0500 by ozPATT

Gin framework - installation and routing configuration

SummaryTake a look at the official introduction of the Gin framework:Gin is a web framework written in Go (Golang). It is an API framework similar to martini but with better performance, which is nearly 40 times faster due to httprouter. If you are a performance and efficiency seeker, you will fall in love with gin.Yes, we use Gin to write API ...

Posted on Fri, 15 Nov 2019 04:17:42 -0500 by lazytiger

Using sklearn to evaluate each category of multi classification

                             .                       .   the data we simulat ...

Posted on Thu, 14 Nov 2019 09:49:34 -0500 by serenade2

How to upload pictures to qiniu cloud

Here's how the Upload component in element UI uploads the image to qiniu cloud (free version, with traffic restrictions) I. preparations 1. Go to qiniu cloud to register an account and authenticate with its real name. Without authentication, storage space cannot be created       2. Understand element UI components 2. Create the upload ...

Posted on Mon, 11 Nov 2019 09:03:39 -0500 by dustbuster

ThinkPHP v5.1.x POP chain analysis

Environment: Mac OS 10.13 mamap prophp 7.0.33 + xdebugvistudio code preface POP Chain I understand: using magic methods and ingeniously constructing special properties to call a series of functions or class methods to perform a sensitive operation call stack deserialization common magic functionsPrefacePOP Chain as I understand it:A call stack ...

Posted on Sun, 10 Nov 2019 08:45:08 -0500 by lmhart

Establishment and setup of H3C equipment network

Router: ER8300 Switch: S3600v2   Note: this network configuration is mainly simulation. This set of network is hung under the office network. Because the network provided by the office is 192.168.3.0/24 and the gateway is 192.168.3.254, we plan as follows: ER8300 wan port: 192.168.3.11 Device IP: 192.168.2. X All application ip are co ...

Posted on Fri, 08 Nov 2019 16:51:38 -0500 by DevXen

Repeated batch upload data processing

In this part, learn and practice SQL knowledge, and provide users to upload data in batches in the program. When uploading, there may be network interruption. Upload part of it and then upload again. There will be data duplication. Or how to modify or delete the original data in batches. Here is a simple example of Insus.NET. First, create a ...

Posted on Mon, 04 Nov 2019 11:33:26 -0500 by bagnallc

Scrapy crawler - get user data

Initialization After installing scratch, execute "scratch startproject myspider" Next, you will see the myspider folder. The directory structure is as follows: scrapy.cfg myspider items.py pipelines.py settings.py __init__.py spiders __init__.py ...

Posted on Fri, 01 Nov 2019 16:42:37 -0400 by John_wilson

Python uses wmi module to obtain system information monitoring system under windows

Hardware information of Windows system obtained by WMI module of Python: hard disk partition, usage, memory size, CPU model, current running process, self starting program and location, system version, etc. In this paper, an example is given to show that python uses the wmi module to obtain the system information monitoring system under windows ...

Posted on Thu, 31 Oct 2019 20:31:01 -0400 by deano2010