Struct Empty 

pub struct Empty { /* private fields */ }

Checks whether the value is empty.

Trait Implementations

impl<T: HasEmpty + ?Sized> Predicate<T> for Empty

fn check(value: &T) -> bool

Checks the given reference to value of type T.

fn expect(formatter: &mut Formatter<'_>) -> Result

Formats the expectation of this predicate into the given formatter.

fn expect_code(formatter: &mut Formatter<'_>) -> Result

Formats the expectation code of this predicate into the given formatter.

fn check_value(value: T) -> bool

where T: Sized,

Checks the given value of type T.