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Lisa Notes

Lisa's notes: musings on daily life, work, study, personal growth, and casual reflections.

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Latest from Lisa Notes

78 recent articles

Lisa Notes

Mar 19, 2026 · Industry Insights

Why Humanoid Robots Are Booming Yet Hard for the Average Person to Enter – A Quick Look at the Robot Industry Chain

The article traces the origins of humanoid robots, explains safety principles like Asimov's Three Laws, outlines generational classifications, breaks down the upstream‑midstream‑downstream industry chain with component cost shares and key vendors, and discusses business models, challenges, and AI‑driven opportunities that make entry difficult for ordinary people.

AI roboticshumanoid robotsmanufacturing

0 likes · 29 min read

Why Humanoid Robots Are Booming Yet Hard for the Average Person to Enter – A Quick Look at the Robot Industry Chain

Lisa Notes

Mar 19, 2026 · Fundamentals

Python Basics: Using break, continue, and Nested Loops

This tutorial explains how break and continue control loop execution in Python, provides concrete while‑loop examples with their outputs, and demonstrates both for‑ and while‑based nested loops for printing multi‑row patterns, illustrating syntax and behavior step by step.

Pythonbreakcontinue

0 likes · 4 min read

Python Basics: Using break, continue, and Nested Loops

Lisa Notes

Mar 19, 2026 · Fundamentals

Understanding Java Arrays: Concepts, Features, and Usage

This note explains why Java introduces arrays, defines arrays as collections of same‑type variables, demonstrates the limitation of using individual variables for many items, and outlines six key characteristics of Java arrays, including fixed length, zero‑based indexing, and default values.

ArraysData StructuresFundamentals

0 likes · 5 min read

Understanding Java Arrays: Concepts, Features, and Usage

Lisa Notes

Mar 18, 2026 · Fundamentals

Python For Loops: Working with Composite Data Types

The article explains Python's for‑in loop syntax, describes common iterable types such as strings, lists, tuples and sets, details how the range function defines start and end values, and provides concrete code examples that print numbers, list elements and characters from both English and Chinese strings.

for-loopiterablelist

0 likes · 3 min read

Python For Loops: Working with Composite Data Types

Lisa Notes

Mar 18, 2026 · Fundamentals

Java Operators and Expressions: A Beginner’s Guide from Scratch

This article provides a comprehensive walkthrough of Java's operators and expressions, covering arithmetic, assignment, increment/decrement, relational, logical, bitwise, and ternary operators, their syntax, evaluation rules, precedence, and practical code examples to help beginners master Java fundamentals.

JavaOperatorsSyntax

0 likes · 20 min read

Java Operators and Expressions: A Beginner’s Guide from Scratch

Lisa Notes

Mar 17, 2026 · Fundamentals

Java Basics: Understanding Primitive Data Types from Scratch

This article explains Java's primitive data types—including integer, floating‑point, character, and boolean types—covers their memory sizes, value ranges, literal syntax, automatic and explicit type conversions, and provides concrete code examples and tables for reference.

Javabooleanchar

0 likes · 16 min read

Java Basics: Understanding Primitive Data Types from Scratch

Lisa Notes

Mar 16, 2026 · Fundamentals

Java Basics: Variables and Constants Explained from Scratch

This note introduces Java constants and variables, covering their definitions, naming conventions, declaration syntax, initialization rules, multiple declarations, and how constants differ from mutable variables through concrete code examples.

ConstantsJavaSyntax

0 likes · 7 min read

Java Basics: Variables and Constants Explained from Scratch

Lisa Notes

Mar 16, 2026 · Fundamentals

Python Fundamentals: Using While Loops with Composite Data Types

This note explains Python's while loop, detailing its three-part structure, special considerations such as the one‑time initial condition, lack of ++/-- operators and do‑while syntax, and provides a concrete example that prints "hello world" ten times.

Pythoncontrol flowloops

0 likes · 3 min read

Python Fundamentals: Using While Loops with Composite Data Types

Lisa Notes

Mar 15, 2026 · Fundamentals

Java Fundamentals: A Beginner’s Guide to Identifiers and Keywords

This note explains Java identifiers—allowed characters, first‑character rules, valid and invalid examples—lists all language keywords that cannot be reused as names, and outlines practical naming conventions for classes, methods, constants, and packages to improve code readability.

IdentifiersJavakeywords

0 likes · 6 min read

Java Fundamentals: A Beginner’s Guide to Identifiers and Keywords

Lisa Notes

Mar 15, 2026 · Fundamentals

Understanding Python’s “pass” Keyword: A Practical Guide

The article explains that the pass keyword in Python serves only as a syntactic placeholder to keep code blocks valid, illustrating its use with a simple age‑checking example where the pass statement does nothing but allow the program to run without errors.

PythonSyntaxbasic programming

0 likes · 2 min read

Understanding Python’s “pass” Keyword: A Practical Guide