minByOrNull<R extends Comparable> method
E?
minByOrNull<R extends Comparable>(
- R selector(
- E element
Returns the first element yielding the smallest value of the given
selector
function or null
if there are no elements.
Implementation
E? minByOrNull<R extends Comparable>(R Function(E element) selector) {
if (isEmpty) return null;
final iterator = this.iterator..moveNext();
E minElement = iterator.current;
R minValue = selector(minElement);
while (iterator.moveNext()) {
final current = iterator.current;
final value = selector(current);
if (minValue.compareTo(value) > 0) {
minElement = current;
minValue = value;
}
}
return minElement;
}