countItems<K, V> static method

int countItems<K, V>(
  1. Map<K, Iterable<V>> inputMap
)

Counts total items across all iterable values in a map.

Implementation

static int countItems<K, V>(Map<K, Iterable<V>> inputMap) =>
    inputMap.values.fold<int>(0, (int sum, Iterable<V> iter) => sum + iter.length);