Enum lrs::option::Option

An optional value.

Syntax

enum Option<T> {
    None,
    Some(T),
}

Name	Description
None	The value is not present.
Some	The value is present.

Receiver	Name	Description
`&mut self`	as_mut	Returns an `Option` containing an mutable reference to the value (if any.)
`&self`	as_ref	Returns an `Option` containing an immutable reference to the value (if any.)
`self`	chain	Applies a function to the value (if any) and returns the result.
`&self`	is_none	Returns whether this object does not contain a value.
`&self`	is_some	Returns whether this object contains a value.
`self`	map	If the value is present, replaces it by the result of a function application.
`&mut self`	take	Replaces the value by `None` and returns the original.
`self`	unwrap	Unwraps the value or aborts.
`self`	unwrap_or	Unwraps the value or returns another one.

Name	Description
Clone	Objects that can be duplicated.
Copy	Objects that can safely be copied via `memcpy`.
Eq	Objects that implement the binary `==` and `!=` operators.
Hash	Objects that can be hashed.
Iterator	Objects that can be iterated over.
MaybeClone	Objects that can be duplicated.