cast<RK, RV> method
Provides a view of this map as having RK
keys and RV
instances,
if necessary.
If this set contains only keys of type RK
and values of type RV
,
all read operations will work correctly.
If any operation exposes a non-RK
key or non-RV
value,
the operation will throw instead.
Entries added to the map must be valid for both a Map<K, V>
and a
Map<RK, RV>
.
Implementation
Map<RK, RV> cast<RK, RV>() {
Map<Object, Object> self = this;
return self is Map<RK, RV> ? self : Map.castFrom<K, V, RK, RV>(this);
}