Comprehensive Rust (202412)
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47. Exercise Solutions

来源 Google 浏览 1 扫码 打印 2026-10-24 13:55:35
  • Exercise Solutions

Exercise Solutions

Solutions to the Chromium exercises can be found in this series of CLs.

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  • Welcome to Comprehensive Rust 🦀
  • 1. Running the Course
    • 1.1. Course Structure
    • 1.2. Keyboard Shortcuts
    • 1.3. Translations
  • 2. Using Cargo
    • 2.1. Rust Ecosystem
    • 2.2. Code Samples
    • 2.3. Running Cargo Locally
  • 3. Welcome
  • 4. Hello, World
    • 4.1. What is Rust?
    • 4.2. Benefits of Rust
    • 4.3. Playground
  • 5. Types and Values
    • 5.1. Hello, World
    • 5.2. Variables
    • 5.3. Values
    • 5.4. Arithmetic
    • 5.5. Type Inference
    • 5.6. Exercise: Fibonacci
      • 5.6.1. Solution
  • 6. Control Flow Basics
    • 6.1. if Expressions
    • 6.2. Loops
      • 6.2.1. for
      • 6.2.2. loop
    • 6.3. break and continue
      • 6.3.1. Labels
    • 6.4. Blocks and Scopes
      • 6.4.1. Scopes and Shadowing
    • 6.5. Functions
    • 6.6. Macros
      • 6.7. Exercise: Collatz Sequence
        • 6.7.1. Solution
  • 7. Welcome
  • 8. Tuples and Arrays
    • 8.1. Arrays
    • 8.2. Tuples
    • 8.3. Array Iteration
    • 8.4. Patterns and Destructuring
    • 8.5. Exercise: Nested Arrays
      • 8.5.1. Solution
  • 9. References
    • 9.1. Shared References
    • 9.2. Exclusive References
    • 9.3. Slices
    • 9.4. Strings
    • 9.5. Exercise: Geometry
      • 9.5.1. Solution
  • 10. User-Defined Types
    • 10.1. Named Structs
    • 10.2. Tuple Structs
    • 10.3. Enums
    • 10.4. Const
    • 10.5. Static
    • 10.6. Type Aliases
    • 10.7. Exercise: Elevator Events
      • 10.7.1. Solution
        • 11. Welcome
        • 12. Pattern Matching
    • 12.1. Matching Values
    • 12.2. Destructuring Structs
    • 12.3. Destructuring Enums
    • 12.4. Let Control Flow
    • 12.5. Exercise: Expression Evaluation
      • 12.5.1. Solution
  • 13. Methods and Traits
    • 13.1. Methods
    • 13.2. Traits
      • 13.2.1. Implementing Traits
      • 13.2.2. Supertraits
      • 13.2.3. Associated Types
    • 13.3. Deriving
    • 13.4. Exercise: Generic Logger
      • 13.4.1. Solution
  • 14. Welcome
    • 15. Generics
      • 15.1. Generic Functions
      • 15.2. Generic Data Types
      • 15.3. Generic Traits
      • 15.4. Trait Bounds
      • 15.5. impl Trait
      • 15.6. dyn Trait
      • 15.7. Exercise: Generic min
        • 15.7.1. Solution
  • 16. Standard Library Types
    • 16.1. Standard Library
    • 16.2. Documentation
    • 16.3. Option
    • 16.4. Result
    • 16.5. String
    • 16.6. Vec
    • 16.7. HashMap
    • 16.8. Exercise: Counter
      • 16.8.1. Solution
  • 17. Standard Library Traits
    • 17.1. Comparisons
    • 17.2. Operators
    • 17.3. From and Into
    • 17.4. Casting
    • 17.5. Read and Write
    • 17.6. Default, struct update syntax
    • 17.7. Closures
    • 17.8. Exercise: ROT13
      • 17.8.1. Solution
  • 18. Welcome
  • 19. Memory Management
    • 19.1. Review of Program Memory
    • 19.2. Approaches to Memory Management
    • 19.3. Ownership
    • 19.4. Move Semantics
    • 19.5. Clone
    • 19.6. Copy Types
    • 19.7. Drop
    • 19.8. Exercise: Builder Type
      • 19.8.1. Solution
  • 20. Smart Pointers
    • 20.1. Box<T>
    • 20.2. Rc
    • 20.3. Owned Trait Objects
    • 20.4. Exercise: Binary Tree
      • 20.4.1. Solution
  • 21. Welcome
  • 22. Borrowing
    • 22.1. Borrowing a Value
    • 22.2. Borrow Checking
    • 22.3. Borrow Errors
    • 22.4. Interior Mutability
    • 22.5. Exercise: Health Statistics
      • 22.5.1. Solution
  • 23. Lifetimes
    • 23.1. Lifetime Annotations
    • 23.2. Lifetime Elision
    • 23.3. Struct Lifetimes
    • 23.4. Exercise: Protobuf Parsing
      • 23.4.1. Solution
  • 24. Welcome
  • 25. Iterators
    • 25.1. Iterator
    • 25.2. IntoIterator
    • 25.3. FromIterator
    • 25.4. Exercise: Iterator Method Chaining
      • 25.4.1. Solution
  • 26. Modules
    • 26.1. Modules
    • 26.2. Filesystem Hierarchy
    • 26.3. Visibility
    • 26.4. use, super, self
    • 26.5. Exercise: Modules for a GUI Library
      • 26.5.1. Solution
  • 27. Testing
    • 27.1. Test Modules
    • 27.2. Other Types of Tests
    • 27.3. Compiler Lints and Clippy
    • 27.4. Exercise: Luhn Algorithm
      • 27.4.1. Solution
  • 28. Welcome
  • 29. Error Handling
    • 29.1. Panics
    • 29.2. Result
    • 29.3. Try Operator
    • 29.4. Try Conversions
    • 29.5. Error Trait
    • 29.6. thiserror
    • 29.7. anyhow
    • 29.8. Exercise: Rewriting with Result
      • 29.8.1. Solution
  • 30. Unsafe Rust
    • 30.1. Unsafe
    • 30.2. Dereferencing Raw Pointers
    • 30.3. Mutable Static Variables
    • 30.4. Unions
    • 30.5. Unsafe Functions
    • 30.6. Unsafe Traits
    • 30.7. Exercise: FFI Wrapper
      • 30.7.1. Solution
  • 31. Welcome
  • 32. Setup
  • 33. Build Rules
    • 33.1. Binary
    • 33.2. Library
  • 34. AIDL
    • 34.1. Birthday Service Tutorial
      • 34.1.1. Interface
      • 34.1.2. Service API
      • 34.1.3. Service
      • 34.1.4. Server
      • 34.1.5. Deploy
      • 34.1.6. Client
      • 34.1.7. Changing API
      • 34.1.8. Updating Implementations
    • 34.2. AIDL Types
      • 34.2.1. Primitive Types
      • 34.2.2. Array Types
      • 34.2.3. Sending Objects
      • 34.2.4. Parcelables
      • 34.2.5. Sending Files
  • 35. Testing
    • 35.1. GoogleTest
    • 35.2. Mocking
  • 36. Logging
  • 37. Interoperability
    • 37.1. With C
      • 37.1.1. Calling C with Bindgen
      • 37.1.2. Calling Rust from C
    • 37.2. With C++
      • 37.2.1. The Bridge Module
      • 37.2.2. Rust Bridge
      • 37.2.3. Generated C++
      • 37.2.4. C++ Bridge
      • 37.2.5. Shared Types
      • 37.2.6. Shared Enums
      • 37.2.7. Rust Error Handling
      • 37.2.8. C++ Error Handling
      • 37.2.9. Additional Types
      • 37.2.10. Building for Android: C++
      • 37.2.11. Building for Android: Genrules
      • 37.2.12. Building for Android: Rust
    • 37.3. With Java
  • 38. Welcome
  • 39. Setup
  • 40. Comparing Chromium and Cargo Ecosystems
  • 41. Policy
  • 42. Build Rules
    • 42.1. Unsafe Code
    • 42.2. Depending on Rust Code from Chromium C++
    • 42.3. Visual Studio Code
    • 42.4. Exercise
  • 43. Testing
    • 43.1. rust_gtest_interop Library
    • 43.2. GN Rules for Rust Tests
    • 43.3. chromium::import! Macro
    • 43.4. Exercise
  • 44. Interoperability with C++
    • 44.1. Example Bindings
    • 44.2. Limitations of CXX
    • 44.3. CXX Error Handling
      • 44.3.1. Error Handling: QR Example
      • 44.3.2. Error Handling: PNG Example
    • 44.4. Using CXX in Chromium
    • 44.5. Exercise
  • 45. Adding Third Party Crates
    • 45.1. Configuring Cargo.toml
    • 45.2. Configuring gnrt_config.toml
    • 45.3. Downloading Crates
    • 45.4. Generating gn Build Rules
    • 45.5. Resolving Problems
      • 45.5.1. Build Scripts Which Generate Code
      • 45.5.2. Build Scripts Which Build C++ or Take Arbitrary Actions
    • 45.6. Depending on a Crate
    • 45.7. Reviews and Audits
    • 45.8. Checking into Chromium Source Code
      • 45.9. Keeping Crates Up to Date
      • 45.10. Exercise
  • 46. Bringing It Together - Exercise
  • 47. Exercise Solutions
  • 48. Welcome
  • 49. no_std
    • 49.1. A Minimal Example
    • 49.2. alloc
  • 50. Microcontrollers
    • 50.1. Raw MMIO
    • 50.2. PACs
    • 50.3. HAL Crates
    • 50.4. Board Support Crates
    • 50.5. The Type State Pattern
    • 50.6. embedded-hal
    • 50.7. probe-rs and cargo-embed
      • 50.7.1. Debugging
    • 50.8. Other Projects
  • 51. Exercises
    • 51.1. Compass
    • 51.2. Solutions
  • 52. Application Processors
    • 52.1. Getting Ready to Rust
    • 52.2. Inline Assembly
    • 52.3. MMIO
    • 52.4. Let’s Write a UART Driver
      • 52.4.1. More Traits
    • 52.5. A Better UART Driver
      • 52.5.1. Bitflags
      • 52.5.2. Multiple Registers
      • 52.5.3. Driver
      • 52.5.4. Using It
    • 52.6. Logging
      • 52.6.1. Using It
      • 52.7. Exceptions
      • 52.8. Other Projects
  • 53. Useful Crates
    • 53.1. zerocopy
    • 53.2. aarch64-paging
    • 53.3. buddy_system_allocator
    • 53.4. tinyvec
    • 53.5. spin
  • 54. Bare-Metal on Android
    • 54.1. vmbase
  • 55. Exercises
    • 55.1. RTC Driver
    • 55.2. Solutions
  • 56. Welcome
  • 57. Threads
    • 57.1. Plain Threads
    • 57.2. Scoped Threads
  • 58. Channels
    • 58.1. Senders and Receivers
    • 58.2. Unbounded Channels
    • 58.3. Bounded Channels
  • 59. Send and Sync
    • 59.1. Marker Traits
    • 59.2. Send
    • 59.3. Sync
    • 59.4. Examples
  • 60. Shared State
    • 60.1. Arc
    • 60.2. Mutex
    • 60.3. Example
  • 61. Exercises
    • 61.1. Dining Philosophers
    • 61.2. Multi-threaded Link Checker
    • 61.3. Solutions
  • 62. Welcome
    • 63. Async Basics
    • 63.1. async/await
    • 63.2. Futures
    • 63.3. Runtimes
      • 63.3.1. Tokio
    • 63.4. Tasks
  • 64. Channels and Control Flow
    • 64.1. Async Channels
    • 64.2. Join
    • 64.3. Select
  • 65. Pitfalls
    • 65.1. Blocking the Executor
    • 65.2. Pin
    • 65.3. Async Traits
    • 65.4. Cancellation
  • 66. Exercises
    • 66.1. Dining Philosophers
    • 66.2. Broadcast Chat Application
    • 66.3. Solutions
  • 67. Thanks!
  • 68. Glossary
  • 69. Other Resources
  • 70. Credits
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