Efficiently manage heterogenous collections in Rust using enums, traits, or the `Any` type. Learn the tradeoffs of each approach, from stack vs. heap allocation to accessing specific methods, and discover how to reduce boilerplate with procedural macros for optimal code structure.
Generate musical notes on a Raspberry Pi Pico using C/C++ or Rust. Learn to control PWM frequency and duty cycle for precise sound output. Example code demonstrates playing "Twinkle Twinkle Little Star," covering frequency calculation and clock divider techniques for optimal sound reproduction within the human hearing range.