8a9fd64129 ^
0643b79165 ^
b046a6e331 ^
1
2
3 4 5 6 7 8 9 10 11 12 13 14 15 16 17
Map(a -> Some(1), b -> None) Map(a -> 1) a undefined a undefined a undefined a undefined hai! hai! 2 hai! undefined 1 undefined