There are plenty of operations that would be affec...

# stdlib

[mg6maciej]

There are plenty of operations that would be affected. E.g. how should this behave for:
1) Map + MapWithDefault (should there be default)
2) MapWithDefault + Map
3) MapWithDefault + MapWithDefault (which default is used, if any)
I'll just stick to adding .withDefault { -1 } everywhere I need to preserve the behavior.