Map.of constructor - Map - dart:core library (original) (raw)

description

Map<K, V>.of(

1. Map<K, V> other )

Creates a LinkedHashMap with the same keys and values as other.

A LinkedHashMap requires the keys to implement compatibleoperator== and hashCode, and it allows null as a key. It iterates in key insertion order.

final planets = <int, String>{1: 'Mercury', 2: 'Venus', 3: 'Earth'};
final mapOf = Map<num, String>.of(planets);
print(mapOf); // {1: Mercury, 2: Venus, 3: Earth}

Implementation

factory Map.of(Map<K, V> other) = LinkedHashMap<K, V>.of;