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kotlinlang

```
val Array&lt;Coordinate&gt;.centroid
    get() = fold(mutableMapOf&lt;Double, Double&gt;()) { acc, coord -&gt; acc.also { it[coord.x] = coord.y } }.run {
        Coordinate(keys.average(), values.average())
    }
```
Is there a better way to get the average coordinate from an array of coordinates? (Coordinate is a simple data class holding two doubles, x and y)

To just simplify....
```
val Array&lt;Coordinate&gt;.centroid
    get() = associateBy({ it.x }, { it.y }).run {
        Coordinate(keys.average(), values.average())
    }
```

Better would be something like this.
```
val Array&lt;Coordinate&gt;.centroid
    get() = Coordinate(map { it.x }.average(), map { it.y }.average())
```

Sadly there's no `averageBy`.

yeah I'm not sure how I avoided any of the simpler options but thanks again