public static Maybe <T> TryGet <T>(this ITryGet <int, T> self, int key)
{
T value = self.TryGet(key, out bool fail);
return(fail ? default(Maybe <T>) : new Maybe <T>(value));
}
public static V TryGet <K, V>(this ITryGet <K, V> self, K key, V defaultValue)
{
V value = self.TryGet(key, out bool fail);
return(fail ? defaultValue : value);
}
public static Maybe <V> TryGet <K, V>(this ITryGet <K, V> self, K key)
{
V value = self.TryGet(key, out bool fail);
return(fail ? default(Maybe <V>) : new Maybe <V>(value));
}