Kubenetes study notes Namespace
What is a Namespace
In Kubernetes, namespaces provide a mechanism for isolating resource groups in a single cluster. Resource names must be unique within a namespace, but not across namespaces. Namespace based scope only applies to namespace objects (such as deployment, service, etc.), not cluster wide objects (such as StorageClass, Nodes, Per ...
Added by DJ Unique on Tue, 22 Feb 2022 14:08:17 +0200
[Matlab] calculation examples of mean square error of single measurement, mean square error of arithmetic average, weighted most probable value, function fitting and modi diagram
1. Mean square error of single measurement and mean square error of arithmetic mean
array = [
120.0360
120.0390
120.0260
120.0270
120.0350
120.0360
120.0310
120.0250
119.9830
120.0410];
average = mean(array);
r = array - average;
error1 = (sum(r.^2)/(size(array,1)-1))^(1/2);%Mean square error of single measurement
error2 = ...
Added by medaswho on Tue, 22 Feb 2022 13:58:39 +0200
[LeetCode notes] binary search special
Binary search = half search
Time complexity O (logN)
The most standard search
Initialize left boundary int len = arr.length - 1;
int l = 0; int r = len-1;
while loop judgment condition This is a left closed right closed interval (I often use it) while (left <= right)
There are also left closed and right open (not commonly used) ...
Added by jimmy2gurpreet on Tue, 22 Feb 2022 13:34:15 +0200
[ruoyi Vue plus] learning note 15 - adding queue data to Redisson Delayed Queue (Redisson source code + Lua script)
preface
During this time, I was making up the video of Spring Cloud, which was originally intended to prepare for learning [ruoyi cloud plus]. Then I was urged by the lion leader in the group today (covering my face). The leader said that we can analyze the new function of [ruoyi Vue plus] version 4.0, Redisson distributed queue.
In fact, ...
Added by SapAuthor on Tue, 22 Feb 2022 13:27:39 +0200
Simulation and implementation of simple Shell under Linux
Simulation and implementation of simple Shell under Linux
Full code: https://github.com/JiaZhengJingXianSheng/Linux_Shell
1, fork
Fork system call is used to create a new process, called a child process, which runs simultaneously with the process (called the process of system call fork). This process is called the parent process. After creat ...
Added by n1tr0b on Tue, 22 Feb 2022 13:21:43 +0200
A honeypot contract parsing call hiding
Author: auok007[1]AboveLast time I sent it, I saw a lot of people and commented on the analysis of a honeypot contract [2], which is the most commented article in my articles.In the process of writing, I also tried and analyzed while writing. The previous part misled some people who read the article. I apologize. I also learned a lot in the pro ...
Added by NathanLedet on Tue, 22 Feb 2022 13:15:02 +0200
Web front end interview question: shallow copy and deep copy, and use recursion to realize deep copy
Shallow copy and deep copy
JS data type
First, we need to understand the data types of JS. JS data types are divided into "basic data type" and "reference data type", such as subscript
Basic data typeReference data typenumberObkect (function)stringbooleanundefinednullSymbol (new in ES6)Bigint (new in ES10)
Memory
Then we ...
Added by frans-jan on Tue, 22 Feb 2022 12:57:59 +0200
[note] nesting of python: dictionary list, store list in dictionary, store dictionary in dictionary
1, Nesting of python
Sometimes you need to store a series of dictionaries in a list or a list as a value in a dictionary, which is called nesting. We can nest dictionaries in lists, lists in dictionaries, and even dictionaries in dictionaries.
2, Dictionary list
Remember our previous example of aliens, if dictionary alien_0 contains all ...
Added by leony on Tue, 22 Feb 2022 12:55:02 +0200
The deep copy that bothered me for 48 hours, today finally
Received feedback from community students, hope MMClassification support kfold-cross-valid The cross validation function is arranged by the development students immediately, and it is planned to support this feature within 24 hours.
However, there is a problem in development: the Config object generated by deep copy has no dump method. Therefor ...
Added by sametch on Tue, 22 Feb 2022 12:41:25 +0200
Two image enhancement methods: image point operation and image grayscale processing
Abstract: This paper mainly explains the grayscale processing of image point operation, introduces the common grayscale processing methods in detail, and shares the mutual conversion of image color space and the implementation of three grayscale conversion algorithms.
This article is shared from Huawei cloud community< [Python from zero t ...
Added by Svoboda on Tue, 22 Feb 2022 12:04:24 +0200