UniqueValidator class

Validates that the provided collection only contains unique items.

i.e. that we can't find 2 equal elements in the collection.

Uniqueness is defined by the == operator method of the objects being compared.

Supported types: Iterable and Map

Inheritance

Constructors

UniqueValidator()

Properties

message ↔ Function
read / write, override-getter
allowNull ↔ bool
null is allowed by default for every ConstraintValidator. [...]
read / write, inherited
argumentValues ↔ List
read / write, inherited
defaultArgumentValues ↔ List
read / write, inherited
hashCode → int
The hash code for this object.
read-only, inherited
runtimeType → Type
A representation of the runtime type of the object.
read-only, inherited

Methods

isValid(Object value, ValueContext context) → bool
override
initialize() → void
inherited
noSuchMethod(Invocation invocation) → dynamic
Invoked when a non-existent method or property is accessed.
inherited
resetArgumentValues() → void
inherited
toString() → String
Returns a string representation of this object.
inherited
validate(dynamic value, [ ValueContext context ]) → bool
inherited

Operators

operator ==(dynamic other) → bool
The equality operator.
inherited