fix valueSequence

CHANGELOG.md

@@ -16,6 +16,7 @@
 
 ### Fixed
 - Partially fixed a bug with `MutableMeta` observable wrappers.
+- `valueSequence` now include root value. So `meta.update` works properly.
 
 ### Security
 

build.gradle.kts

@@ -8,7 +8,7 @@ plugins {
 
 allprojects {
     group = "space.kscience"
-    version = "0.7.2-dev-1"
+    version = "0.7.2-dev-2"
 }
 
 subprojects {

dataforge-meta/src/commonMain/kotlin/space/kscience/dataforge/meta/Meta.kt

@@ -188,10 +188,12 @@ public operator fun <M : TypedMeta<M>> M?.get(key: String): M? = this?.get(key.p
 
 
 /**
- * Get a sequence of [Name]-[Value] pairs using top-down traversal of the tree
+ * Get a sequence of [Name]-[Value] pairs using top-down traversal of the tree.
+ * The sequence includes root value with empty name
  */
 public fun Meta.valueSequence(): Sequence<Pair<Name, Value>> = sequence {
     items.forEach { (key, item) ->
+        value?.let { yield(Name.EMPTY to it) }
         item.value?.let { itemValue ->
             yield(key.asName() to itemValue)
         }