peter-lyons-kehl

Presentation on Const Generics as of 1.50.0 stable and 1.52.0-nightly

Challenges

• Beware no, or misleading, documentation
  • Nothing in Rust Book.
  • RFC https://rust-lang.github.io/rfcs/2000-const-generics.html and various issues rust-lang/rust#68436 have tips or examples, but many are invalid!
• Syntax may seem arbitrary:
  • Need ::< turbofish at some places, ordinary < elsewhere.
  • Need {...} curly brackets around some const generic parameter values, not around others.
  • Some error messages feel like going in circles.

stopachka

use std::collections::HashMap;
use std::fmt;
use std::io;
use std::num::ParseFloatError;
use std::rc::Rc;

/*
  Types
*/