python function 2_ variable scope, function parameters (positional parameters, keyword parameters, default parameters, variable length positional parameters, variable length keyword parameters), unpacking, reference
I wrote a function before, there should be a total of 3 articles about the function, and I will post it here when I write it
0. Content
variable scopeMulti-Function Program Execution Flowfunction return valuefunction parametersUnpack and swap the values of two variablesquotemutable and immutable types
1. Variable scope
The variable sc ...
Posted by m4x3vo on Mon, 14 Nov 2022 22:48:37 +0300
[The ninth week of embedded system basics]--embedded real-time operating system uc/OS
1.CubeMX build project
1.1 Configure RCC (open external clock), SYS (select debug interface)
1.2 Configure GPIO (PC13 is used to light up LED lights)
1.3 Configure USART1 (serial port output)
1.4 Save, generate project file
Since the above steps are relatively simple and not shown, if you forget, you can refer to my other articles:
ht ...
Posted by dunnsearch on Sun, 13 Nov 2022 12:09:00 +0300
Dictionary name [key name] = new value Modify the value of the dictionary
37. Dictionary name [key name] = new value Modify the value of the dictionary
1. Mutability of dictionaries
Strings and tuples are immutable data types.
Lists and dictionaries are mutable.
Variable means that it can be changed, that is, elements can be added to lists and dictionaries, and existing elements can be deleted and modified.
...
Posted by buzzby on Mon, 24 Oct 2022 07:07:08 +0300
Java uses tool classes to improve the efficiency of writing reports
The tool class and demo code repository in this article
Why use java code to write reports
For report data, in most cases, the method of writing sql is used to provide data sources for large screens/reports, but in some complex cases, it cannot be achieved by using only sql, or when it is difficult to achieve, it will be adopted to implement ...
Posted by patrickcurl on Sun, 23 Oct 2022 01:29:01 +0300
A Java-based Accounting Management System Completed by Computer
Code + paper download link:
http://106.55.47.97/host-pictures/java.png
Overview
The Java accounting management system is mainly used for financial personnel to judge the development direction of the company from the accounts. For individuals and families, future consumption plans can be formulated through bookkeeping, so as to draw a clear ...
Posted by dotnotwhat on Sat, 22 Oct 2022 22:56:11 +0300
[C++ Search Binary Tree] 1. The concept of binary search tree 2. Non-recursive implementation of binary search tree
Table of contents
1. Binary search tree concept
2. Non-recursive implementation of binary search tree
2.3 Search for deletion of binary tree (the most important and most difficult interface)
3.(key) recursive implementation of binary search tree
4.(KV) recursive implementation of binary search tree
1. Binary search tree concept
A sear ...
Posted by rutin on Wed, 19 Oct 2022 15:57:05 +0300
Teen python Series 10. Strings
Teenager python Series Directory - Old Programmer's Blog - CSDN Blog
Teenager python teaching video ppt source code
Introduction
In Python, the text enclosed in quotation marks is a string, and the string can also be saved in a variable for use. If the text in the string contains double quotes, you can enclose the string in single quote ...
Posted by squallm1 on Sun, 09 Oct 2022 22:43:30 +0300
Eight Python automation scripts to improve work efficiency and make fishing happier
Hello ~ Hello everyone, I'm Madoka
When we work ~ often do some repetitive things
For example: reading news, sending emails, checking the weather, cleaning folders, etc.
Is there any way to shorten or even cancel the time to do these things?
Of course there is! ! That is to use an automated script to pull~
This saves us having to do t ...
Posted by mannyee on Sat, 08 Oct 2022 00:33:39 +0300
A detailed explanation of C++ operator overloading
First, the basic concept of operator overloading
Operator overloading is to redefine an existing operator and give it another function to adapt to different data types (operator overloading cannot change the original meaning. It cannot change the meaning of the underlying type)
Operator overloading is just a syntactic convenience, i ...
Posted by rdhatt on Fri, 07 Oct 2022 11:27:09 +0300
Qt-plugin creation and application reference
Qt-plugin creation reference
qt-plugin creation extension of functionality. Qt provides two APIs to create plug-ins: high-level APIs used to extend Qt itself, such as custom database drivers, image formats, text encoding and custom styles, etc.; low-level APIs used to extend Qt applications. If you want to write a plugin to extend Qt i ...
Posted by volomike on Sun, 02 Oct 2022 21:33:16 +0300