/**
* @param d dictionary to sort keys from
* @return keys from d sorted by ascending value they are mapped to
*/
public static <T> NSArray<T> keysSortedByValueAscending(final NSDictionary<T, ?> d) {
NSArray<T> result = null;
if (d != null && d.count() > 0) {
final NSArray<T> keys = d.allKeys();
result =
ERXArrayUtilities.sortedArrayUsingComparator(keys, new NSDictionaryKeyValueComparator(d));
}
return result != null ? result : NSArray.EmptyArray;
}
// if you're keys are not all strings, this method will throw.
public static NSArray<String> stringKeysSortedAscending(final NSDictionary<String, ?> d) {
NSArray<String> result = null;
if (d != null && d.count() > 0) {
final NSArray<String> keys = d.allKeys();
result =
ERXArrayUtilities.sortedArrayUsingComparator(
keys, NSComparator.AscendingStringComparator);
}
return result != null ? result : NSArray.EmptyArray;
}
