[daily] Go language Bible - package and file - Import package exercises

1. Each package has a globally unique import path 2. According to the Convention, the name of a package is the same as the last field of the package import path Exercise 2.2: write a general unit conversion program. Read the parameters from the command line in the way similar to the cf program. If it is the default, read the parameters from the ...

Posted on Fri, 03 Apr 2020 07:55:20 -0700 by seanmayhew

windows installation Sphinx 3.0.1 (Chinese search)

The introduction of sphinx is not much, please check the document directly 1. Download the latest version of sphinx from the spinx official website. Address: http://www.sphinxsearch.com/ 2. Create a new data and log directory 3. Create a new sphinx.conf configuration file and put it in bin directory For inform ...

Posted on Fri, 03 Apr 2020 07:02:08 -0700 by tonymontana

Python implements block chain simulation from zero [with source code]

Python is not the mainstream development language in the area of block chains or digital currency.But if your goal is to study the principles of block chain technology, or if you need to simulate a block chain network on your own notebook and do some research experiments, such as completing your own graduation design project or scientific resea ...

Posted on Fri, 03 Apr 2020 06:25:12 -0700 by mblack0508

Webback series: a new understanding of webback

What is webback webpack is a front-end modularization scheme, which focuses more on module packaging. We can treat all resources (pictures, js files, css files, etc.) in development as modules, and process the resources through loader and plugins to package them into front-end resources that meet the deployment of production e ...

Posted on Fri, 03 Apr 2020 06:01:19 -0700 by flforlife

NMS simulation code: from the paper efficient non maximum supply

Efficient non maximum suppression The non maximum suppression mentioned here is a little different from the non maximum suppression mentioned at ordinary times. NMS refers to the application in the detection algorithm, which filters multiple rectangular boxes and filters out the required rectangular boxes. The NMS ment ...

Posted on Fri, 03 Apr 2020 05:31:12 -0700 by cdinca

Change the local transparency of the picture, and realize the gradual change of the transparency according to the position

Recently, I met a demand when I was working on a project, that is to process a picture and realize the edge fuzzy transition. After a long time of thinking, I finally used the following methods. 1. It is ARGB that makes up A picture. We can take out the ARGB of the whole picture directly, and then change the A of the picture, that is, transpare ...

Posted on Fri, 03 Apr 2020 03:54:20 -0700 by WebbDawg

HttpUrlConnection+JSON application instance

JSON JSON is a lightweight data exchange format. There are two data structures: single JSON data and multiple JSON arrays. The JSON array is represented by a pair of brackets [], the JSON object is represented by a pair of curly brackets {}, the key value is relative, the key must wrap a pair of double quotes, and mult ...

Posted on Fri, 03 Apr 2020 03:51:48 -0700 by freddykhalid

Firewall policy of Mysql remote access in Centos7

Firewall policy - port access Setup steps Detection port If you cannot connect to Mysql remotely, check whether the default 3306 port allows access: [root@localhost /]# iptables -L -n|grep 3306 ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 state NEW tcp dpt:3306 allow access to If not, you ne ...

Posted on Fri, 03 Apr 2020 03:22:47 -0700 by jennyp

CentOS three node deployment of blue whale operation and maintenance system

Equipment condition hostname IP cpu mem storage system lanjing1 192.168.100.100 1C 2G 20G CentOS Linux release 7.3.1611 (Core) lanjing2 192.168.100.101 1C 2G 20G CentOS Linux release 7.3.1611 (Core) lanjing3 192.168.100.102 1C 2G 20G CentOS Linux release 7.3.1611 (Core) Turn ...

Posted on Fri, 03 Apr 2020 02:03:13 -0700 by PDP11

Under what circumstances does a varchar int query index?

In fact, many developers who have worked for several years sometimes feel dizzy. Here is a test with specific examples. 1. Preparations Prepare two tables for subsequent tests. Table 1: Create table test1 with 3 columns, where id is the primary key (int), c_no is int, has index, and c_2 is a common field /*Create table test1 */ create table t ...

Posted on Fri, 03 Apr 2020 02:02:54 -0700 by JesperBisgaard