Trait ClosureMode 

pub trait ClosureMode {
    type Target<'a, A: 'a, B: 'a>: ?Sized + 'a;
    type SendTarget<'a, A: 'a, B: 'a>: ?Sized + 'a;
}

Trait that maps a closure mode marker (Val or Ref) to the corresponding dyn Fn trait object type.

Used by CloneFn to parameterize the Deref target of wrapped closures. Val produces dyn Fn(A) -> B (by-value), Ref produces dyn Fn(&A) -> B (by-reference).

Required Associated Types

type Target<'a, A: 'a, B: 'a>: ?Sized + 'a

The unsized closure trait object type for this mode.

type SendTarget<'a, A: 'a, B: 'a>: ?Sized + 'a

The unsized closure trait object type for this mode with Send + Sync bounds.

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

impl ClosureMode for Ref

type SendTarget<'a, A: 'a, B: 'a> = dyn Fn(&A) -> B + Send + Sync + 'a

type Target<'a, A: 'a, B: 'a> = dyn Fn(&A) -> B + 'a

impl ClosureMode for Val

type SendTarget<'a, A: 'a, B: 'a> = dyn Fn(A) -> B + Send + Sync + 'a

type Target<'a, A: 'a, B: 'a> = dyn Fn(A) -> B + 'a