maxByKey<U extends Comparable<U> > method
T?
maxByKey<U extends Comparable<U> >(
- U f(
- T
Returns the element that gives the maximum value from the specified function.
Implementation
T? maxByKey<U extends Comparable<U>>(U Function(T) f) {
T max;
U maxVal;
if (moveNext()) {
max = current;
maxVal = f(max);
} else {
return null;
}
for (final element in this) {
final val = f(element);
if (val.compareTo(maxVal) > 0) {
max = element;
maxVal = val;
}
}
return max;
}