pub struct Operation<ClosureProto: ?Sized> { /* private fields */ }
Expand description

An asynchronous operation object.

Note: Saves a copy of active multi-use closure callbacks, which it frees on drop.

Implementations

Cancel the operation.

Beware! This will not necessarily cancel the execution of the operation on the server side. However it will make sure that the callback associated with this operation will not be called any more, effectively disabling the operation from the client side’s view.

Warning, you should never attempt to use this to cancel a callback from within the execution of that callback itself. This should go without saying, since it makes absolutely no sense to try and do this, but be aware that this is not supported by the C API and will break things.

Return the current status of the operation

Set the callback function that is called when the operation state changes.

Usually this is not necessary, since the functions that create Operation objects already take a callback that is called when the operation finishes. Registering a state change callback is mainly useful, if you want to get called back also if the operation gets cancelled.

Trait Implementations

Executes the destructor for this type. Read more

Auto Trait Implementations

Blanket Implementations

Gets the TypeId of self. Read more
Immutably borrows from an owned value. Read more
Mutably borrows from an owned value. Read more

Returns the argument unchanged.

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

The type returned in the event of a conversion error.
Performs the conversion.
The type returned in the event of a conversion error.
Performs the conversion.