delete method

Map<String, String> delete(String key)

Deletes key and its value from this map and returns a new map without it.

Example:

final style = {'color': 'red', 'font-size': '10px'};
final withoutColor = style.delete('color');
// returns: {'font-size': '10px'}

Implementation

Map<String, String> delete(String key) {
  final map = {...this};
  map.remove(key);
  return map;
}