Comprehensive from: MOOC, Zhihu, CSDN 01 Answers to the first 100 questions and answers: jingmentudou Because you never know when you’ll be woken up. Open a remote can avoid going to the company in the middle of the night. 02 Yue Yao jade In this line, the computer starts when the power button is pressed, …
1 NumPy, a must-have tool for travel and home [Numpy] ‘s name comes from Numerical & Python. As a powerful Python library, it can be said that Python is a must-have tool for scientific computing and data analysis in travel and home (big fog). It is mainly used to provide, store, and calculate N-dimensional arrays …
Python entry and advanced NumPy library application – cellular automata Read More »
First, the concept of dictionary type 1 Purpose Store multiple values, but each value has a key corresponding to it, and the key has a description function for the value. The stored values are often used to represent different states, for example, the stored values include name, age, height, weight, hobby, etc. 2 Definitions Separate …
Python Basic Tutorial Dictionary Type Built-in Methods Read More »
This article is a summary of reading the source code by myself. Please indicate the source of the transfer. Thank you. Welcome to communicate with you. qq:1037701636 email: 200803090209@zjut.com , gzzaigcn2012@gmail.com Another piece of content driven by the I2 bus is the algorithm [structure] corresponding to the adapter . The main content in this structure …
Detailed explanation of DM644x device driver I2C bus driver under Linux (2) Read More »
The code I wrote before found that there was a bug, so I went to debug this timer. The simplest timing mode I used at the time of the tragedy turned out to be some incomprehensible phenomenon. The Time of DM6437 has the simplest timing modes such as 64bit and 32bit, and the corresponding working …
Solve the problem of naked timer developed under CC5.4 under DM6437 Read More »
Graphical User Interface and Game Development [GUI] based on tkinter module[] GUI is the abbreviation of Graphical User Interface, and the graphical user interface should be familiar to anyone who has used a computer, so there is no need to describe it here. Python’s default GUI development module is tkinter (named Tkinter in versions prior …
Python Development Courses (12) – Graphical User Interface and Game Development Read More »
Source Portal When developing Android, we generally have some requirements to load web pages or execute some JavaScript. We all know that the control that implements this function in Android is WebView, and ReactNative also has components that implement such requirements. Its name is also WebView. So today’s article will talk about the use of …
Detailed explanation of ReactNative WebView components Read More »
[source code portal] When we were developing Android, the ViewPage control was used very frequently. The easiest way is to make a guide page, the main interface of the application, etc. The component that implements this function in ReactNative development is ViewPageAndroid. When you see the If the component ends with Android, you will understand …
Detailed explanation of ReactNative ViewPageAndroid component Read More »
1. Simple sorting #include <stdio.h> void sort1(unsigned char *a, unsigned int n); void sort2(unsigned char *a, unsigned int n); void main() { unsigned int i; unsigned char a[] = {12,15,100,1,0,3,2,4,8,9,6,11}; for(i = 0; i < sizeof(a);i++) printf("%d ", a[i]); sort2(a,sizeof(a)); for(i = 0; i < sizeof(a);i++) printf("%d ", a[i]); } void sort1(unsigned char *a, unsigned …
It has been more than a year since ConstraintLayout was released at the Google I/O conference last year, but it has not been popularized. Those who know the layout of ConstraintLayout know that its performance has indeed improved a lot. Not long ago, the Google Developer Blog published an article [Understanding the performance benefits of …