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Rust’s Generic Const Arguments replace generic_const_exprs

blog.rust-lang.org 13 min read Editor score 7/10

Rust’s Const Generics project has designed and implemented a family of features for using more expressions with generic parameters, informed by experience with generic_const_exprs. The design and usage details matter to engineers building Rust libraries.

What

Generic Const Arguments (GCA) is a family of Rust features for using more expressions involving generic parameters in const generics.

How

GCA expressions must currently appear inside a gca! macro call; the features are intended to replace generic_const_exprs.

Why it matters

The features can enable abstractions such as arrays sized by expressions like N + 1, which stable const generics do not support.

Read on blog.rust-lang.org → Lobsters · 4 comments

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