valueFor method

V? valueFor(
  1. K key
)

The value for the given key, or null if key is not in the map.

A functional version of operator [] akin to Iterable.elementAt.

Some maps allow null as a value. For those maps, a lookup using this operator cannot distinguish between a key not being in the map, and the key being there with a null value. Methods like containsKey or putIfAbsent can be used if the distinction is important.

Implementation

V? valueFor(K key) => this[key];