Struct predicates::iter::InPredicate [−][src]
Predicate that returns true
if variable
is a member of the pre-defined
set, otherwise returns false
.
Note that this implementation places the fewest restrictions on the
underlying Item
type at the expense of having the least performant
implementation (linear search). If the type to be searched is Hash + Eq
,
it is much more efficient to use HashableInPredicate
and
in_hash
. The implementation-specific predicates will be
deprecated when Rust supports trait specialization.
Implementations
impl<T> InPredicate<T> where
T: Ord + Debug,
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impl<T> InPredicate<T> where
T: Ord + Debug,
[src]pub fn sort(self) -> OrdInPredicate<T>
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Creates a new predicate that will return true
when the given variable
is
contained with the set of items provided.
Note that this implementation requires Item
to be Ord
. The
InPredicate
uses a less efficient search algorithm but only
requires Item
implement PartialEq
. The implementation-specific
predicates will be deprecated when Rust supports trait specialization.
Examples
use predicates::prelude::*; let predicate_fn = predicate::in_iter(vec![1, 3, 5]).sort(); assert_eq!(true, predicate_fn.eval(&1)); assert_eq!(false, predicate_fn.eval(&2)); assert_eq!(true, predicate_fn.eval(&3)); let predicate_fn = predicate::in_iter(vec!["a", "c", "e"]).sort(); assert_eq!(true, predicate_fn.eval("a")); assert_eq!(false, predicate_fn.eval("b")); assert_eq!(true, predicate_fn.eval("c"));
Trait Implementations
impl<T: Clone> Clone for InPredicate<T> where
T: PartialEq + Debug,
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impl<T: Clone> Clone for InPredicate<T> where
T: PartialEq + Debug,
[src]fn clone(&self) -> InPredicate<T>
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pub fn clone_from(&mut self, source: &Self)
1.0.0[src]
impl<T> Display for InPredicate<T> where
T: PartialEq + Debug,
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impl<T> Display for InPredicate<T> where
T: PartialEq + Debug,
[src]impl<T: PartialEq> PartialEq<InPredicate<T>> for InPredicate<T> where
T: PartialEq + Debug,
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impl<T: PartialEq> PartialEq<InPredicate<T>> for InPredicate<T> where
T: PartialEq + Debug,
[src]fn eq(&self, other: &InPredicate<T>) -> bool
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fn ne(&self, other: &InPredicate<T>) -> bool
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impl<T> Predicate<T> for InPredicate<T> where
T: PartialEq + Debug,
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impl<T> Predicate<T> for InPredicate<T> where
T: PartialEq + Debug,
[src]impl<T> PredicateReflection for InPredicate<T> where
T: PartialEq + Debug,
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impl<T> PredicateReflection for InPredicate<T> where
T: PartialEq + Debug,
[src]impl<T> StructuralEq for InPredicate<T> where
T: PartialEq + Debug,
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impl<T> StructuralEq for InPredicate<T> where
T: PartialEq + Debug,
[src]impl<T> StructuralPartialEq for InPredicate<T> where
T: PartialEq + Debug,
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impl<T> StructuralPartialEq for InPredicate<T> where
T: PartialEq + Debug,
[src]Auto Trait Implementations
impl<T> RefUnwindSafe for InPredicate<T> where
T: RefUnwindSafe,
impl<T> RefUnwindSafe for InPredicate<T> where
T: RefUnwindSafe,
impl<T> Send for InPredicate<T> where
T: Send,
impl<T> Send for InPredicate<T> where
T: Send,
impl<T> Sync for InPredicate<T> where
T: Sync,
impl<T> Sync for InPredicate<T> where
T: Sync,
impl<T> Unpin for InPredicate<T> where
T: Unpin,
impl<T> Unpin for InPredicate<T> where
T: Unpin,
impl<T> UnwindSafe for InPredicate<T> where
T: UnwindSafe,
impl<T> UnwindSafe for InPredicate<T> where
T: UnwindSafe,
Blanket Implementations
impl<P, Item> PredicateBooleanExt<Item> for P where
Item: ?Sized,
P: Predicate<Item>,
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impl<P, Item> PredicateBooleanExt<Item> for P where
Item: ?Sized,
P: Predicate<Item>,
[src]fn and<B>(self, other: B) -> AndPredicate<Self, B, Item> where
B: Predicate<Item>,
Self: Sized,
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B: Predicate<Item>,
Self: Sized,
fn or<B>(self, other: B) -> OrPredicate<Self, B, Item> where
B: Predicate<Item>,
Self: Sized,
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B: Predicate<Item>,
Self: Sized,
fn not(self) -> NotPredicate<Self, Item> where
Self: Sized,
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Self: Sized,
impl<P, Item> PredicateNameExt<Item> for P where
Item: ?Sized,
P: Predicate<Item>,
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impl<P, Item> PredicateNameExt<Item> for P where
Item: ?Sized,
P: Predicate<Item>,
[src]fn name(self, name: &'static str) -> NamePredicate<Self, Item> where
Self: Sized,
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Self: Sized,