get<T> method
T
get<T>(
- K key,
- T orElse
Retrieves the element key
from Map.
If Map has no element of key
, or if the type does not match T
, or if Map is itself Null, orElse
is returned.
Mapからkey
の要素を取得します。
Implementation
T get<T>(K key, T orElse) {
assert(key != null, "The key is empty.");
if (this == null || !containsKey(key) || this![key] is! T?) {
return orElse;
}
return (this![key] as T?) ?? orElse;
}