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kotlinlang

why is transform in Map.mapValues defined as `transform: (Map.Entry&lt;K, V&gt;) -&gt; R` instead of just `transform: (V) -&gt; R`?

And I don't have any objections here.. it's just not what I expected :slightly_smiling_face:

I guess because you might want to calculate the new value based on the key and not only on the value

I guess that's because you might want to map values based on keys.

For mapping values you can do `.values.map()`

But that wouldn't put the new values in the map

but `.values.map()` will return `List&lt;R&gt;` and not the initial map :wink:

but what you said makes sense, thanks :wink:

fwiw I'm routinely confused by that design choice too, but it kinda makes sense.