Quick stupid question... trying to learn Kotlin by coding some codewars challenges, and how to conve...

# announcements

[magisu]

Quick stupid question... trying to learn Kotlin by coding some codewars challenges, and how to convert mutableListOf("abc", "def", "ghi").map { it.length } to an Array<Int>?

[Ugi]

mutableListOf("abc", "def", "ghi").map { it.length }.toTypedArray() if I remember correctly

[magisu]

so if I do someString.split(" ").map { it.length!! }.toTypedArray<Int>().min(), I am seeing inferred type is Int? but Int was expected.

[StavFX]

Uglijesa’s answer is correct, the “problem” is that min() returns null in case you are working with an empty array. That’s true whether you are working with Array<Int> or Array<Foo>

[magisu]

Ah! I see, the ^ error marker is pointing at toTypedArray so I am confused.

[magisu]

Thanks all!