20 lines
530 B
Kotlin
Vendored
20 lines
530 B
Kotlin
Vendored
import org.jetbrains.kotlinx.dataframe.*
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import org.jetbrains.kotlinx.dataframe.annotations.*
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import org.jetbrains.kotlinx.dataframe.api.*
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import org.jetbrains.kotlinx.dataframe.io.*
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@DataSchema
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data class Record(val a: String, val b: Int)
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fun box(): String {
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val df = List(10) { Record(it.toString(), it) }.let { dataFrameOf(*it.toTypedArray()) }
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val df1 = df.groupBy { b }.toDataFrame()
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df1.group[0].a
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df1.group[0].b
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val df2 = df.groupBy { b }.into("gr")
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df2.gr[0].a
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df2.gr[0].b
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return "OK"
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}
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