I want to do something along the lines of: ```val...

# stdlib

[Rohde Fischer]

I want to do something along the lines of:

val map: Map<Key, Value> = emptymap().withDefault { defaultValue }

val basedOnMap = map + (newKey to newValue)

val shouldBeDefault = basedOnMap.getValue(differentKey)

but it seems that the basedOnMap does not retain the default value, so when I do getValue(differentKey) I get an exception rather than the expected defaultValue. IIs there a way to deal with this? E.g. a plusValue or some way of doing (map + pair).withDefault { map.defaultValue } or similar (assume a context where I don't necessarily have obvious access to the default value)