Basic data type of Python language - Number/Bool/String(3-1)
2, Data type
Like dynamic type programming languages such as Scheme, Ruby, Perl and Tcl, python has a dynamic type system and garbage collection function, which can automatically manage memory usage. Python's built-in basic types mainly include number, bool, string, list, tuple, set, and * * dictionary *.
1. Number
Number types in Python 3.x ...
Posted on Fri, 10 Sep 2021 18:10:22 -0400 by doofystyle
iOS uses scripting to automate target replication
When some projects are mature, there will be a need to automate configuration to generate a completely new project, no need for developers to manually modify the project files, and transfer the configuration work directly to operations and maintenance or the configuration team
In fact, it is common practice to just change the target duplicate ...
Posted on Wed, 01 Jul 2020 12:17:15 -0400 by phpjaco
Super detailed construction of Redis cluster under Linux (centos7)
This blog is based on the single node installation of redis. If you have not installed a single node small partner, please refer to this blog: https://blog.csdn.net/weixin_44422604/article/details/106876756
1, Building a redis cluster (cache cluster)
1. The redis on node1 has been installed. Now, stop ...
Posted on Thu, 25 Jun 2020 01:52:30 -0400 by Spaceman-Spiff
Site building tutorial from 0
Write in front
I planned to write a website building tutorial a long time ago. As the end of the term has been delayed until now, the memory of website building has also been blurred because of the test points. However, I try to build a website step by step from 0 and solve the problems.
Final results ...
Posted on Tue, 23 Jun 2020 00:47:33 -0400 by FredAt
Detailed explanation of Dubbo SPI mechanism
From the principle of java spi in the previous article, we can see that java spi mechanism has the following disadvantages:
You can only traverse all implementations and instantiate them all.
The configuration file simply lists all the extension implementations without naming them. It makes it di ...
Posted on Wed, 17 Jun 2020 01:21:18 -0400 by Rineru
2. redis cluster configuration
2. redis cluster configuration
reference resources: The construction and practice of Redis Cluster Redis cluster construction and simple use
2.1 environment configuration
The redis installation package contains redis-trib.rb, which is used to create a cluster and copy the script to / usr/local/bin /. In this way, you can call this comman ...
Posted on Thu, 30 Apr 2020 11:07:20 -0400 by bagsobrands
Sleuth link tracking of Spring Cloud series
This article is a series of articles. For those who haven't read the previous episodes, please jab here:
Sleuth link tracking of Spring Cloud series (1)
Sleuth link tracking of Spring Cloud series (2)
This article explains how Sleuth uses elastic search, Logstash, and Kibana to analyze tracking data.
Use ELK to analyze tracking data
...
Posted on Tue, 28 Apr 2020 22:04:34 -0400 by Static Cling
Several methods to judge whether a number is a prime number
Method 1: exhaustively judge whether a number is a prime number
Given a number n, starting from 2, we can automatically increase x to determine whether n is divided by X.
x can be increased to the square root of N at most, because if there is a value greater than n that can be divided by N, then its quotient must be the value less than the squa ...
Posted on Sun, 05 Apr 2020 01:58:49 -0400 by johncrook
Profile Yaml
Yaml
I. Introduction
(1) YAML language (pronunciation / ˈ j æ m ə l /) is designed to facilitate human reading and writing. It is essentially a general data serialization format.
(2) Basic rules
Case sensitive
Use indents to represent hierarchy
Tab is not allowed when indenting, only spaces are allowed. ...
Posted on Thu, 02 Apr 2020 02:46:40 -0400 by frog_
Python dictionary notes
I. dictionary
1. The function is the same as the list function
2. Use in or not in to determine whether the index exists
birthdays = {'Alice': 'Apr 1', 'Bob': 'Dec 12'}
'Alice' in birthdays # True
'Jack' in birthdays # False
3. Use values() to get all values
spam = {'color': 'red', 'age': 42}
spam # {'red', 42}, you can use for loop travers ...
Posted on Tue, 31 Mar 2020 04:41:28 -0400 by adamjblakey