init research

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

@@ -0,0 +1,16 @@
+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 id: String, val b: Int)
+
+public data class NameValuePair<V>(val name: String, val value: V)
+
+fun box(): String {
+    val df = dataFrameOf(Record("1", 1), Record("2", 123), Record("3", 321))
+    val df1 = df.first().transpose().dropNulls { value }
+    val v: Any = df1.value[0]
+    return "OK"
+}