mergeKeysValuesNullable<M> method
Same as mergeKeysValues, but allows null
at merger
.
Implementation
Map<K, M> mergeKeysValuesNullable<M>(
Map<K, V> other, M Function(K key, V? val1, V? val2) merger) {
var merge = <K, M>{};
var allKeys = <K>{...keys, ...other.keys};
for (var k in allKeys) {
var v1 = this[k];
var v2 = other[k];
merge[k] = merger(k, v1, v2);
}
return merge;
}