Rust gems

This repository offers some Rust snippets that can be useful when studying the language.

• vec_any Collect trait objects in a vector and use downcast_ref to access the concrete type instances of the items
• mutate_in_closure Mutate a value in a closure without copy and clone by using Rc
• async structured concurrency Improve developer UX while maintaining a decent performance with async scopes
• async_higher_order_fn Implement an async higher order function that accept an async closures and returns an async result
• from_str Thou shall not implement From<str'> but instead implement the FromStr trait
• graphemes Trim an unicode string to a maximum length with

Run the snippets

Dependencies:

• Install the command runner just
• Install the nextest runner cargo-nexttest
• For improved incrememtal build times, install the nightly toolchain to support the cranelift backend: rustup toolchain install nightly

Run the snippets in debug mode:

just test-all

Run clippy validations and tests in parallel:

just clippy-release & just test-all