Detailed explanation of basic knowledge of functions
1. What is a function
A function is an organized, reusable piece of code that implements a single or related function. Functions can improve the modularity of the application and the reuse rate of the code. In the previous article, we have used the built-in functions provided by python, such as print(). But you can also create your own functio ...
Posted by zenabi on Tue, 24 Jan 2023 00:31:42 +0300
How to publish and handle domain events
Original link
introduction
Domain Event s are one of the building blocks of Domain Driven Design. It captures the memory of something happening in a particular domain. We create domain events to notify other parts of the same domain that something interesting happened, and these other parts may react to it.
Domain events are usually immutabl ...
Posted by ifm1989 on Mon, 23 Jan 2023 21:47:41 +0300
About fucking pyinstaller reporting UnicodeDecodeError
About fucking pyinstaller reporting UnicodeDecodeError
1. Error message
Traceback (most recent call last):
File "E:\python_env\env_video_downloader_3_9_2\lib\runpy.py", line 197, in _run_module_as_main
return _run_code(code, main_globals, None,
File "E:\python_env\env_video_downloader_3_9_2\lib\runpy.py", line 87, in _run_code
exe ...
Posted by alex clone on Mon, 23 Jan 2023 14:27:12 +0300
[Self-study on the principles of artificial intelligence] Convolutional neural network: breaking the bottleneck of image recognition
😊Hi, I'm Xiaohang, a literary and artistic young man who is getting bald and getting stronger. 🔔This article explains the convolutional neural network: breaking the bottleneck of image recognition, roll it up together!
1. Handwriting recognition
In the field of machine learning and neural networks, there is a classic "Hel ...
Posted by alchemist_fr on Mon, 23 Jan 2023 00:42:36 +0300
[Detailed C++] In-depth understanding of classes and objects (six default member functions)
Reminder
This article has a total of 6736 words, and it takes about 20 minutes to read it.
written in front
This article is the second in the explanation of C++ classes and objects. By the time of this article, we have really started to get to the really difficult place for classes and objects. This article focuses on the explanation of the ...
Posted by Xster on Sun, 22 Jan 2023 06:58:01 +0300
Raspberry Pi boot self-starting opencv program script and error analysis and expansion
1. Make a test script First we need to make a script to test if autostart works.
pi@raspberry:~ $ nano /home/pi/start.sh
The content of start.sh is as follows:
/usr/bin/python3 /home/pi/GeometryOperations.py
Be sure to pay attention to the use of absolute paths here, otherwise there is a probability that loading will fail.
Then add t ...
Posted by stunna671 on Sun, 22 Jan 2023 03:58:53 +0300
3 hours proficient in common operations of opencv images
3 hours proficient in common operations of opencv(2) pictures
Reference video resources: 3 hours proficient in Opencv-Python
Grayscale image
img = cv2.imread('Resources/lena.png')
imgGray = cv2.cvtColor(img, cv2.COLOR_BGR2GRAY)
cv2.imshow('gray', imgGray)
cv2.waitKey(0)
The default image channel in opencv is BGR, so it is COLOR ...
Posted by wakmp on Sun, 22 Jan 2023 02:31:27 +0300
Python Data Structure and Algorithm Analysis Exercises__chapter5
1. Topics for discussion
slightly.
2. Programming exercises
1. Conduct a random experiment to test the difference between the sequential search algorithm and the binary search algorithm when processing lists of integers.
The binary search algorithm can only search ordered lists, and the sequential search algorithm can search both unorde ...
Posted by trawets on Fri, 20 Jan 2023 16:01:06 +0300
pytorch study notes - tensorboard use
The use of tensorboard (1)
The use of the .add_scalar() method in the SummaryWriter class (you can hold down Ctrl and click add_scalar to view the function of this method).
First install tensorboard with pip, and execute the following command to draw an image with y=2x.
from torch.utils.tensorboard import SummaryWriter
writer = SummaryWri ...
Posted by pvraja on Fri, 20 Jan 2023 10:18:36 +0300
Implementation of the Fruit Fly Optimization Algorithm (FOA) (Python with source code)
1. Implementation idea of ​​fruit fly optimization algorithm
Fruit Fly Optimization Algorithm (FOA) is a swarm intelligence optimization algorithm proposed by Pan Wenchao in 2011. It simulates the way fruit flies in nature forage, and compares the position information of food to the optimal solution of optimization problems. The optimal soluti ...
Posted by krysco on Fri, 20 Jan 2023 04:38:33 +0300