Category：November, 2023 - Develop Pile - Page 4
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[C++] STL_vector usage with mock implementation of common interfaces
Article Catalog 1. Introduction of vector2. Use of vector2.1 Definition of vector2.2 Use of vector iterators2.3 Spatial growth problems for vectors 3, vector add, delete, check and change3.1 push_back (emphasis added)3.2 pop_back (emphasis added)3.3 operator[] (emphasis added)3.4 insert3.5 erase3.6 swap 1. Introduction of vector Introduction to vector documentation A vector is a sequence container representing […]
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Python drawing three-dimensional roses
from matplotlib import cm import matplotlib.pyplot as plt import numpy as np fig = plt.figure() ax = fig.add_subplot(projection=’3d’) [x, t] = np.meshgrid(np.array(range(25))/24.0, np.arange(0, 575.5, 0.5)/575*17*np.pi-2*np.pi) p = (np.pi/2)*np.exp(-t/(8*np.pi)) u = 1-(1-np.mod(3.6*t, 2*np.pi)/np.pi)**4/2 y = 2*(x**2-x)**2*np.sin(p) r = u*(x*np.sin(p)+y*np.cos(p)) surf = ax.plot_surface(r*np.cos(t), r*np.sin(t),u*(x*np.cos(p)-y*np.sin(p)), rstride=1, cstride=1, cmap=cm.Reds_r,linewidth=0, antialiased=True) # Set your own text content and display settings […]
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Local RabbitMQ service setup (windows)
Local RabbitMQ service setup (windows) preambleI. Erlang environment preparation1. Download the installation package2. Installation RabbitMQ server installation1. Download the installation package2. Install the RabbitMQ server3. Start RabbitMQ4. Start-up status detection5. Managing plug-in enablement III. Login management interface preamble The previous RabbitMQ has introduced a lot of content, today is mainly to build a usable RabbitMQ […]
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ELK+Kafka+Beats implementation for log collection platforms
Large amounts of data can be searched and analyzed in a short period of time. More than just a full-text search engine, Elasticsearch provides distributed multi-user capabilities, real-time analytics, and the ability to process complex search statements, making it useful in a wide range of scenarios, such as enterprise search, logging, and event data analysis. […]
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MySQL 5.7 Detailed Download, Installation and Configuration Tutorial
The following MySQL 5.7.27 Detailed Download, Installation and Configuration Tutorials [A long time ago also recorded a MySQL8.0 installation and configuration process, if 8.0 can refer to another article below] MySQL Download and Installation and Navicat Configuration (Super Detailed) _Kilimanjaro Dawn’s Blog – Blog_navicat configuration mysql I. Preface Recently had a few years ago, the […]
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Elasticsearch family of components: Kibana’s seamlessly integrated data visualization and exploration platform
Elasticsearch is an open source, Lucene-based distributed search and analytics engine designed for use in cloud computing environments that enables real-time, scalable search, analysis, and exploration of full-text and structured data. It is highly scalable and can search and analyze large amounts of data in a short period of time. More than just a full-text […]
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STM32+ESP8266 access to Kijiji Cloud to realize a small IOT smart home project
preamble Recently there are a lot of small partners private message message, want me to launch a chapter can be through the APP remote control and access to sensor information experiment tutorial. To be honest, in the embedded bios, this is considered to be a medium to high level. It just so happens that I’m […]