Indexed access test

dataforge-meta/src/commonMain/kotlin/hep/dataforge/meta/mapMeta.kt

@@ -6,7 +6,6 @@ import hep.dataforge.values.Value
 /**
  * Convert meta to map of maps
  */
-@DFExperimental
 fun Meta.toMap(descriptor: NodeDescriptor? = null): Map<String, Any?> {
     return items.entries.associate { (token, item) ->
         token.toString() to when (item) {
@@ -19,7 +18,6 @@ fun Meta.toMap(descriptor: NodeDescriptor? = null): Map<String, Any?> {
 /**
  * Convert map of maps to meta
  */
-@DFExperimental
 fun Map<String, Any?>.toMeta(descriptor: NodeDescriptor? = null): Meta = Meta {
     entries.forEach { (key, value) ->
         @Suppress("UNCHECKED_CAST")

dataforge-meta/src/commonMain/kotlin/hep/dataforge/meta/metaMatcher.kt

@@ -4,7 +4,8 @@ import hep.dataforge.names.Name
 import hep.dataforge.names.toName
 
 /**
- * Get all items matching given name.
+ * Get all items matching given name. The index of the last element, if present is used as a [Regex],
+ * against which indexes of elements are matched.
  */
 fun Meta.getIndexed(name: Name): Map<String, MetaItem<*>> {
     val root = when (name.length) {

dataforge-meta/src/commonTest/kotlin/hep/dataforge/meta/MetaTest.kt

@@ -49,4 +49,17 @@ class MetaTest {
 
         assertEquals(meta, reconstructed)
     }
+
+    @Test
+    fun indexed() {
+        val meta = Meta {
+            (0..20).forEach {
+                set("a[$it]", it)
+            }
+        }
+        val indexed = meta.getIndexed("a[1.]")
+        assertEquals(10, indexed.size)
+        assertEquals(null, indexed["8"])
+        assertEquals(12, indexed["12"].int)
+    }
 }