init research

2026-02-08 11:20:43 -10:00
commit bdf064f54d
3041 changed files with 1592200 additions and 0 deletions
@@ -0,0 +1,19 @@
+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(
+        "value" to listOf(1, 2, 3, 3),
+        "type" to listOf("a", "b", "a", "b")
+    )
+    val gb = df.groupBy { expr { "Category: ${type.uppercase()}" } named "category" }
+    val categoryKey = gb.keys.category
+
+    val dfWithCategory = gb.concatWithKeys()
+
+    val category: DataColumn<String> = dfWithCategory.category
+
+    return "OK"
+}