When you encounter an Option or Result, do you reach for unwrap() first? Learn to distinguish between missing values and failed operations, and how to chain processing steps with map, and_then, and ?. Through runnable examples and comprehensive exercises, you’ll learn to decide for yourself how far to propagate errors and where to handle them.

As the number of `match` branches increases, it can be easy to get confused about how to inspect the structure of a value and extract only the parts you need. In this course, you’ll learn how to destructure tuples, structs, enums, and slices directly, and how to use `if let`, `let else`, and match guards to express conditions concisely and accurately. You’ll also use examples to see whether values are moved or borrowed when references are handled as patterns.

Have you ever encountered a different string length with Korean text in Rust, or had code that slices a string panic? In this course, visual materials and runnable examples explain everything from the ownership relationship between `String` and &str to the difference between characters and bytes in UTF-8. You’ll practice creating, searching, splitting, and converting strings, as well as Unicode normalization, and learn the criteria for designing safe string APIs while reducing unnecessary copies.

As a Rust project grows, simply splitting the code into files makes it difficult to clearly manage responsibilities and visibility. In this course, we’ll cover everything step by step, from the differences between packages, crates, and modules to file organization, paths, visibility, separating libraries from executable files, re-exports, and workspaces.

Learn field-tested techniques for everything from toolchain configuration to formatting, linting, testing, and documentation, using Rust’s standard built-in tools to resolve environment differences and code quality issues. Become a better Rust developer.

Essential tool for developers. A 30-minute intro to Git, the de facto standard VCS.

Are you using Java but still only utilizing Java 8 syntax? Discover the useful new features added in Java 11 LTS and become a more proficient developer by using Java more conveniently. The features introduced here can be used effectively in Java 11 LTS, 17 LTS, and 21 LTS versions.

This course teaches Rust, a programming language that allows anyone to create robust, efficient, high-performance software. It is ideal because it allows for low-level programming while also having a wealth of high-level language features.

Study the Elm programming language guide to building front-end web apps with pure functional programming in just 3 hours.

Kotlin Programming Language, which you can learn by practicing with 76 examples. You have to develop in Kotlin starting tomorrow, but you don't have time to study the grammar? Let's quickly learn all the grammar of Kotlin with the examples provided in this lecture.

Scala allows you to write much more concise and robust code quickly, while still leveraging the experience you have gained as a Java developer. This course is designed for Java developers to quickly understand the overall look of Scala based on their existing Java knowledge. If you are an existing Java developer, you can learn Scala very easily.