init research

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

@@ -0,0 +1,15 @@
+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 df = dataFrameOf("a", "b", "c")(1, 2, 3, 4, 5, 6)
+    val dCol: DataColumn<String> = df.insert("d") { (b * c).toString() }.at(2)
+        // weird way to check order, but ok?..
+        .select { drop(2) }
+        .select { take(1) }
+        .select { d }.d
+
+    return "OK"
+}