Make getRows delegate to member function get so it's possible to override

Author: koperagen

core/src/main/kotlin/org/jetbrains/kotlinx/dataframe/DataFrame.kt

@@ -102,9 +102,11 @@ public interface DataFrame<out T> :
     @RequiredByIntellijPlugin
     public operator fun get(index: Int): DataRow<T>
 
-    public operator fun get(indices: Iterable<Int>): DataFrame<T> = getRows(indices)
+    public operator fun get(indices: Iterable<Int>): DataFrame<T> =
+        columns().map { col -> col[indices] }.toDataFrame().cast()
 
-    public operator fun get(range: IntRange): DataFrame<T> = getRows(range)
+    public operator fun get(range: IntRange): DataFrame<T> =
+        if (range == indices()) this else columns().map { col -> col[range] }.toDataFrame().cast()
 
     public operator fun get(first: IntRange, vararg ranges: IntRange): DataFrame<T> =
         getRows(headPlusArray(first, ranges).asSequence().flatMap { it.asSequence() }.asIterable())

core/src/main/kotlin/org/jetbrains/kotlinx/dataframe/api/DataFrameGet.kt

@@ -45,11 +45,9 @@ public fun <T> DataFrame<T>.getColumns(vararg columns: String): List<AnyCol> = g
 
 public fun <T> DataFrame<T>.getColumnIndex(col: AnyCol): Int = getColumnIndex(col.name())
 
-public fun <T> DataFrame<T>.getRows(range: IntRange): DataFrame<T> =
-    if (range == indices()) this else columns().map { col -> col[range] }.toDataFrame().cast()
+public fun <T> DataFrame<T>.getRows(range: IntRange): DataFrame<T> = get(range)
 
-public fun <T> DataFrame<T>.getRows(indices: Iterable<Int>): DataFrame<T> =
-    columns().map { col -> col[indices] }.toDataFrame().cast()
+public fun <T> DataFrame<T>.getRows(indices: Iterable<Int>): DataFrame<T> = get(indices)
 
 public fun <T> DataFrame<T>.getOrNull(index: Int): DataRow<T>? = if (index < 0 || index >= nrow) null else get(index)