CollectionUtil class
class CollectionUtil { static bool allUnique(List items) { requireArgumentNotNull(items, 'items'); for(int i = 0; i < items.length; i++) { for(int j = i + 1; j < items.length; j++) { if(items[i] == items[j]) { return false; } } } return true; } static Object aggregate(Iterable source, Object seed, Func2 func) { requireArgumentNotNull(source, 'source'); requireArgumentNotNull(func, 'func'); for (final Object local in source) { seed = func(seed, local); } return seed; } }
Static Methods
bool allUnique(List items) #
static bool allUnique(List items) { requireArgumentNotNull(items, 'items'); for(int i = 0; i < items.length; i++) { for(int j = i + 1; j < items.length; j++) { if(items[i] == items[j]) { return false; } } } return true; }
Properties
final Type runtimeType #
A representation of the runtime type of the object.
external Type get runtimeType;
Operators
bool operator ==(other) #
The equality operator.
The default behavior for all Object
s is to return true if and
only if this
and
other are the same object.
If a subclass overrides the equality operator it should override
the hashCode
method as well to maintain consistency.
bool operator ==(other) => identical(this, other);
Methods
int hashCode() #
Get a hash code for this object.
All objects have hash codes. Hash codes are guaranteed to be the
same for objects that are equal when compared using the equality
operator ==
. Other than that there are no guarantees about
the hash codes. They will not be consistent between runs and
there are no distribution guarantees.
If a subclass overrides hashCode
it should override the
equality operator as well to maintain consistency.
external int hashCode();
noSuchMethod(String name, List args) #
noSuchMethod
is invoked when users invoke a non-existant method
on an object. The name of the method and the arguments of the
invocation are passed to noSuchMethod
. If noSuchMethod
returns a value, that value becomes the result of the original
invocation.
The default behavior of noSuchMethod
is to throw a
noSuchMethodError
.
external Dynamic noSuchMethod(String name, List args);
const Object() #
Creates a new Object
instance.
Object
instances have no meaningful state, and are only useful
through their identity. An Object
instance is equal to itself
only.
const Object();
String toString() #
Returns a string representation of this object.
external String toString();