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Why isn't there a `map.merge` function? (or if there is, why can't I find it? xD) <https://docs.oracle.com/javase/8/docs/api/java/util/Map.html#merge-K-V-java.util.function.BiFunction-|in plain Java it exists . >I'm in a Kotlin JVM project

It’s there:
<https://pl.kotl.in/z5EVUChRZ>

Just make sure that you use MutableMap in Kotlin (this operation modifies map, so it’s not available in Map)

Interesting. On the project I'm working on it's only there if I use `hashmapOf`

Likely IntelliJ pulling  some shenanigans

mutableMapOf should also work, maybe you use read only map instead

Screenshot from 2021-01-22 02-18-41.png

This test actually executes, but IntelliJ points that compiler error

If I change to `hashmapOf` it works both in IntelliJ and executing the test