15 lines
455 B
Kotlin
Vendored
15 lines
455 B
Kotlin
Vendored
import org.jetbrains.kotlinx.dataframe.*
|
|
import org.jetbrains.kotlinx.dataframe.annotations.*
|
|
import org.jetbrains.kotlinx.dataframe.api.*
|
|
import org.jetbrains.kotlinx.dataframe.io.*
|
|
|
|
@DataSchema
|
|
data class Record(val a: String, val b: Int)
|
|
|
|
fun box(): String {
|
|
val df = List(10) { Record(it.toString(), it) }.let { dataFrameOf(*it.toTypedArray()) }
|
|
val df1 = df.groupBy { b }.aggregate { sumFor { b } into "sum" }
|
|
df1.sum.b
|
|
return "OK"
|
|
}
|