Struct predicates::str::IsEmptyPredicate

pub struct IsEmptyPredicate {}

Predicate that checks for empty strings.

This is created by predicates::str::is_empty.

Trait Implementations

impl Clone for IsEmptyPredicate

fn clone(&self) -> IsEmptyPredicate

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for IsEmptyPredicate

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Display for IsEmptyPredicate

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl PartialEq<IsEmptyPredicate> for IsEmptyPredicate

fn eq(&self, other: &IsEmptyPredicate) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Predicate<str> for IsEmptyPredicate

fn eval(&self, variable: &str) -> bool

Execute this Predicate against variable, returning the resulting boolean.

fn find_case<'a>(&'a self, expected: bool, variable: &str) -> Option<Case<'a>>

Find a case that proves this predicate as expected when run against variable.

impl PredicateReflection for IsEmptyPredicate

fn parameters<'a>( &'a self ) -> Box<dyn Iterator<Item = Parameter<'a>> + 'a, Global>

Parameters of the current Predicate.

fn children<'a>(&'a self) -> Box<dyn Iterator<Item = Child<'a>> + 'a, Global>

Nested Predicates of the current Predicate.

impl Copy for IsEmptyPredicate

impl Eq for IsEmptyPredicate

impl StructuralEq for IsEmptyPredicate

impl StructuralPartialEq for IsEmptyPredicate