pub trait Backend: Debug {
// Required methods
fn clone_boxed(&self) -> Box<dyn Backend>;
fn data_type_id(&self) -> TypeId;
fn as_any(&self) -> &dyn Any;
fn equal(&self, rhs: &dyn Backend) -> bool;
}
Performs copy-assignment from
source
.
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Converts to this type from the input type.
Converts to this type from the input type.
Converts to this type from the input type.
This method tests for self
and other
values to be equal, and is used
by ==
.
This method tests for !=
. The default implementation is almost always
sufficient, and should not be overridden without very good reason.