Struct Data 

pub struct Data(/* private fields */);

Data is a wrapper struct for the actual data stored in memory.

It wraps a Box<dyn CloneableAny>, which allows any cloneable type to be stored in it, on the heap. Data stored in memory must be cloneable, as we need to be able to clone it to get owned copies when performing certain operations.

Implementations

impl Data

pub fn new<T: Clone + 'static>(value: &T) -> Data

Create a new Data struct containing a clone of the given value.

We always clone when creating new Data, since we want to have ownership over the contents, and because the lifetime of the passed value is not guaranteed to last as long as we want to.

pub fn as_type<T: CloneableAny + 'static>(&self) -> Result<&T, String>

Downcast the data to a specific type. If the data is the wrong type, returns an error.

The type must implement Clone, for reasons described above.

Trait Implementations

impl AsRef<dyn CloneableAny> for Data

fn as_ref(&self) -> &dyn CloneableAny

Converts this type into a shared reference of the (usually inferred) input type.

impl Clone for Data

fn clone(&self) -> Data

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.