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https://yoseya2410.github.ioA comprehensive collection of technical notes covering computer science, natural sciences, and electronic information. Topics include programming languages (C, Java, Python, JavaScript, TypeScript), web technologies (HTML, CSS, Node.js, VuePress), database management (MySQL), hardware and microcontrollers (STM32, 8051, ESP32), mathematics (Mathematical Analysis, Linear Algebra, Discrete Mathematics), and tools like Git, LaTeX, and Markdown.
Python categorizes data into basic types and container types. Containers are iterable, meaning they can be traversed using loops.
Basic Types:
int: Integers (e.g., 42)float: Floating-point numbers (e.g., 3.14)str: Strings (e.g., "Hello")bool: Boolean values (True or False)Container Types:
List: Mutable, ordered sequence.Tuple: Immutable, ordered sequence.Set: Mutable, unordered, unique elements.Dictionary: Mutable, unordered key-value pairs.Note: Strings support slicing and indexing but are not considered container types because their elements are single characters rather than independent objects.
x86 instructions are categorized into four primary types based on their function:
if, while, and for loops).rel attribute provides semantic information about the relationship between the current page and the linked resource. Multiple values can be specified, separated by spaces.<a href="page2.html" rel="next">Next Page</a>
<a rel="author external" href="https://example.com/about/john-doe">Author</a>Common rel values:
alternate: Different version of the page (e.g., another language).author: Link to the author of the page.help: Link to help documentation.next/prev: Next or previous document in a series.nofollow: Tells search engines not to follow the link.noreferrer: Prevents sending Referer information in the HTTP header.noopener: Prevents the new page from accessing the original window via window.opener.The x86 architecture utilizes various registers for data manipulation and memory segmentation:
General Purpose Registers:
Segment Registers (16-bit):
widget.config(options) # Configure widget attributes
widget.cget(option) # Get a specific attribute value
widget.winfo_exists() # Check if widget exists
widget.winfo_height() # Get widget height
widget.winfo_width() # Get widget width
widget.winfo_x() # Get x coordinate
widget.winfo_y() # Get y coordinateJava achieves cross-platform compatibility via the Java Virtual Machine (JVM). The process involves:
.java files) is compiled by the javac compiler into bytecode (.class files).Java is distributed in three platforms:
There are three primary ways to develop for STM32 microcontrollers:
TypeScript is an open-source programming language developed by Microsoft. It is a superset of JavaScript that adds static type checking and other modern programming features. Key characteristics include:
{} to define styles. Each declaration consists of a property name and a value separated by a colon, and multiple declarations are separated by semicolons. Multiple selectors can be grouped using commas to apply the same styles to different elements./* Single element */
p {
color: red;
text-align: center;
}
/* Grouped elements */
p, h1, h2 {
color: red;
}
/* Combined selectors (descendant) */
li em {
color: red;
}
/* Combined selectors (class on specific element) */
li.special {
color: orange;
}