Programmer Group

python learning notes (8) while loop 1. while cycle In the previous blog, we have learned about the for loop. Here we introduce another loop, while. The syntax of while is very simple. According to its English definition "when...", as long as the following conditional statements of while are ...

Java programming idea enumeration type Basic enum characteristics Call the values() method of enum to traverse the Enum instance. The values method returns the Enum instance array, and the elements in the array are strictly kept in the order when they are declared in enum public enum Shrubbery { ...

1.Ruby installation. Note: do not use the latest 2.2 or 2.3 version of ruby. Some components may not be installed yum -y install openssl-devel gcc wget https://ruby.taobao.org/mirrors/ruby/2.1/ruby-2.1.7.tar.gz tar zxf ruby-2.1.7.tar.gz cd ruby-2.1.7 ./configure --prefix=/usr/local/ruby2.1.7 make && make install echo ...

Header For fear of style conflicts among components, install the following for management npm install styled-components First, change index.css to style.js. If you want to set global variables, such as reset, then import {injectGlobal} from 'styled-components'; injectGlobal` html, body, div, span, applet, object, ...

Copy 6 copies of redis and modify each configuration file (redis.windows.conf) cluster1 To configure bind 192.168.1.223 port 6111 loglevel notice logfile "D:/develop/redisClusterMS/Redis -clu -1/redis6111_log.txt" appendonly yes appendfilename "appendonly.6111.aof" cluster-enabled yes ...

Experimental environmentSimulate 6 servers with 2 servers (add network card) Primary server Redis1:ens33: 192.168.52.150ens36: 192.168.52.153ens37: 192.168.52.154From server Redis2:ens33: 192.168.52.148ens36: 192.168.52.155ens37: 192.168.52.156 Install Redis on both servers [root@localhost ~]# yum install gcc gcc-c++ make -y ##Install envir ...

Source library of this article: program-in-chinese/quan4-highlighter Syntax highlighting is a basic function of a development environment. This paper attempts to use the previous "circle 4" language (see details The implementation of "cycle 4" by Antlr4+JavaScript in programming language experiment )Write a highlighted plug- ...

Preface: We've seen a lot of articles analyzing the use or principles of Redis, but the introduction to a complete set of independent redis cluster environments is not much or not detailed enough. Then, this paper will take you hand to set up a Redis cluster environment, Redis cluster in the company's internal production environment, mostly bu ...

Error in updating pod rubygems/core_ext/kernel_warn /Users/joanfen/.rvm/rubies/ruby-2.3.0/lib/ruby/site_ruby/2.3.0/rubygems/core_ext/kernel_require.rb:55:in `require': cannot load such file -- rubygems/core_ext/kernel_warn (LoadError) from /Users/joanfen/.rvm/rubies/ruby-2.3.0/lib/ruby/site_ruby/2.3.0/rubygems/core_ext/kernel_require.rb:55: ...

Reading guide This article is right Git Pro 10.2 Git internals - git objects The interpretation and transformation of the chapter mainly introduces two things: 1) using Git underlying command to complete the submission, 2) trying to use NodeJS to parse Git objects (Ruby is provided in the article). ###0x001 initialization Initialize a local war ...