Trait Monoid 

pub trait Monoid: Add + Default { }

A Monoid consists of a semigroup (the Add trait in Rust) and an empty value (the Default trait) plus the following laws:

• Associativity: (x + y) + z == x + (y + z)
• Identity: 0 + a == a + 0 == a

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementors