Constant fun (const fn) with Rust - Rainer Stropek - Rust Linz June 2022

Rust

Discover the power of Rust's `const fn` to generate code at compile time, creating efficient and optimized code with session's expert Rainer Stropek.

Key takeaways

Rust’s const fn allows for constant evaluation of functions, which can be used to generate code at compile time.
Constants can be used as return values and as arguments to functions.
const fn can be used to create static variables and constants that are initialized at compile time.
Rust 1.61 adds support for const fn in the standard library, making it easier to use.
Constants can be used to generate code at compile time, such as string concatenation and array initialization.
const fn can be used to create traits that require constants, such as HasNumbers.
Constants can be used to generate code at compile time, such as copying and concatenating strings.
const fn can be used to create functions that take constants as arguments and return constants.
Rust’s const fn is useful for generating code at compile time, making it easier to write efficient and optimized code.
Constants can be required by traits, such as HasNumbers.
const fn can be used to create functions that take constants as arguments and return traits.
Constants can be used to generate code at compile time, such as checking for specific types.
const fn can be used to create functions that take constants as arguments and return functions.
Rust’s const fn is useful for generating code at compile time, making it easier to write efficient and optimized code.

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