Rust

roadmap.sh: https://roadmap.sh/rust

Suggested path through the Rust nodes. Each node links to its lesson when written.

Nodes

Introduction

• What is Rust
• Why Rust (Safety / Performance)
• Installing Rust (rustup)
• rustc & the Toolchain
• Hello World
• Cargo Basics
• Rust Editions

Language Basics

• Variables & Mutability
• Constants & Shadowing
• Scalar Types
• Compound Types (Tuples, Arrays)
• Functions
• Comments & Doc Comments
• Control Flow (if / loop / while / for)
• Statements vs Expressions

Ownership & Borrowing

• Ownership Rules
• Move Semantics
• Clone vs Copy
• References & Borrowing
• Mutable References
• Slices
• The Borrow Checker
• Lifetimes
• Lifetime Elision

Compound & Custom Types

• Structs
• Tuple & Unit Structs
• Enums
• Pattern Matching (match)
• if let / let else / while let
• Methods & Associated Functions
• impl Blocks

Error Handling

• Option<T>
• Result<T, E>
• The ? Operator
• panic! & Unrecoverable Errors
• Custom Error Types
• thiserror / anyhow

Generics & Traits

• Generic Functions & Types
• Traits
• Trait Bounds
• Default Implementations
• Trait Objects & Dynamic Dispatch
• Associated Types
• Operator Overloading
• Derive Macros
• Marker Traits (Send / Sync / Sized)

Collections & Strings

• Vec<T>
• String vs &str
• HashMap / BTreeMap
• HashSet / BTreeSet
• VecDeque
• Iterators
• Iterator Adapters (map / filter / collect)
• Closures

Smart Pointers

• Box<T>
• Rc<T> / Arc<T>
• RefCell<T> & Interior Mutability
• Cell<T>
• Deref & Drop
• Reference Cycles & Weak<T>

Concurrency

• Threads (std::thread)
• move Closures
• Message Passing (channels)
• Shared State (Mutex / RwLock)
• Send & Sync Revisited
• Atomics
• Async / Await
• Futures & Executors (tokio / async-std)

Modules & Crates

• Modules & Paths
• pub & Visibility
• use Declarations
• Packages vs Crates
• Workspaces
• Crates.io & Dependencies
• Semantic Versioning

Advanced

• Unsafe Rust
• Raw Pointers
• FFI (calling C)
• Declarative Macros (macro_rules!)
• Procedural Macros
• Advanced Traits (Supertraits, Newtype)
• const Generics
• Zero-Cost Abstractions

Tooling & Ecosystem

• Cargo (build / run / check)
• rustfmt
• Clippy
• cargo test & Testing
• Documentation Tests
• Benchmarking
• cargo doc
• Debugging (gdb / lldb)
• Publishing a Crate

Resources

See resources.md.

Project ideas

• Extend playgrounds/rust/ with a new cli-grep member crate (cargo new --bin cli-grep) that reads a file, filters lines by a pattern, and exercises Result, the ? operator, and iterator adapters.
• Add a threadpool crate to the workspace that builds a fixed-size worker pool with std::thread + channels — the Rust mirror of the Go worker-pool playground — to internalize Send/Sync and Arc<Mutex<…>>.
• Generalize the existing playgrounds/rust/binary-search into a generic fn binary_search<T: Ord>(…) with trait bounds and a full set of #[test] cases plus a doc test.