all method Null safety

bool all(
  1. bool predicate(
    1. K key,
    2. V value
    )
)

Returns true if all entries match the given predicate. predicate must not be null.

Implementation

bool all(bool Function(K key, V value) predicate) {
  if (isEmpty()) {
    return true;
  }
  for (final KtMapEntry<K, V> entry in iter) {
    if (!predicate(entry.key, entry.value)) {
      return false;
    }
  }
  return true;
}