SparseList<E>.fromMap constructor
Implementation
SparseList.fromMap(Map<Range, E> map) {
final elements = <(Range range, Set<E> values)>[];
final entries = map.entries;
for (final entry in entries) {
final range = entry.key;
final value = entry.value;
elements.add((range, {value}));
}
addAll(elements);
}