Trait StateVersion

pub trait StateVersion {
    type NewArgs;

    const VERSION: u32;

    // Required method
    fn new(args: Self::NewArgs) -> VersionedState<Self>
       where Self: Sized;

    // Provided method
    fn needs_migration() -> Result<bool, Error> { ... }
}

Required Associated Constants

const VERSION: u32

Required Associated Types

type NewArgs

Required Methods

fn new(args: Self::NewArgs) -> VersionedState<Self>

where Self: Sized,

Provided Methods

fn needs_migration() -> Result<bool, Error>

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