1. Vupdate(
   1. Kkey,
   2. Vvalue
   )

Updates all values.

Iterates over all entries in the map and updates them with the resultof invokingupdate.

final terrestrial = <int, String>{1: 'Mercury', 2: 'Venus', 3: 'Earth'};terrestrial.updateAll((key, value) => value.toUpperCase());print(terrestrial); // {1: MERCURY, 2: VENUS, 3: EARTH}

Implementation

void updateAll(V update(K key, V value));