init research

dataframe/plugins/kotlin-dataframe/testData/box/aggregateDataFrame.kt

@@ -0,0 +1,14 @@
+import org.jetbrains.kotlinx.dataframe.*
+import org.jetbrains.kotlinx.dataframe.annotations.*
+import org.jetbrains.kotlinx.dataframe.api.*
+import org.jetbrains.kotlinx.dataframe.io.*
+
+fun box(): String {
+    val row = dataFrameOf("a" to List(10) { it }).aggregate {
+        maxOf { a } into "max"
+        minOf { a } into "min"
+    }
+    val i: Int = row.max
+    val i1: Int = row.min
+    return "OK"
+}