v0.21.0-alpha

0.21.0-alpha "Ussingite" (2023-02-28)

Features

• Support for Self type

  With this change Self (with capital S) can be used to refer
  to the enclosing type in contracts, structs, impls and traits.

  E.g.

  trait Min {
    fn min() -> Self;
  }
  
  impl Min for u8 {
    fn min() -> u8 { // Both `u8` or `Self` are valid here
      return 0
    }
  }
  

  Usage: u8::min() (#803)

• Added Min and Max traits to the std library.
  The std library implements the traits for all numeric types.

  Example

  use std::traits::{Min, Max}
  ...
  
  assert u8::min() < u8::max()
  ``` ([#836](https://github.com/ethereum/fe/issues/836))
  
  

• Upgraded underlying solc compiler to version 0.8.18

Bugfixes

• the release contains minor bugfixes