Iterator class - dart:core library (original) (raw)
An interface for getting items, one at a time, from an object.
The for-in construct transparently uses Iterator to test for the end of the iteration, and to get each item (or element).
If the object iterated over is changed during the iteration, the behavior is unspecified.
The Iterator is initially positioned before the first element. Before accessing the first element the iterator must thus be advanced usingmoveNext to point to the first element. If no element is left, then moveNext returns false, and all further calls to moveNext will also return false.
The current value must not be accessed before calling moveNextor after a call to moveNext has returned false.
A typical usage of an Iterator looks as follows:
var it = obj.iterator;
while (it.moveNext()) {
use(it.current);
}
See also: Iterationin the library tour
Implementers
Properties
current → E
The current element.
no setter
The hash code for this object.
no setterinherited
A representation of the runtime type of the object.
no setterinherited
Methods
Advances the iterator to the next element of the iteration.
noSuchMethod(Invocation invocation)→ dynamic
Invoked when a nonexistent method or property is accessed.
inherited
A string representation of this object.
inherited
Operators
operator ==(Object other)→ bool
The equality operator.
inherited