Add Dart Map .addEntries() term entry

Author: AI-Explorer25

content/dart/concepts/map/terms/add-entries/add-entries.md

@@ -0,0 +1,54 @@
+---
+Title: '.addEntries()'
+Description: 'Adds multiple key-value pairs to an existing Map using an iterable of MapEntry objects.'
+Subjects:
+  - 'Computer Science'
+  - 'Data Science'
+Tags:
+  - 'Dart'
+  - 'Map'
+  - 'Methods'
+CatalogContent:
+  - 'learn-dart'
+  - 'paths/computer-science'
+---
+
+In Dart, the **`.addEntries()`** method allows you to add multiple key-value pairs to an existing `Map` by providing it with an iterable of `MapEntry` objects. This is useful when inserting several entries at once, especially when transforming lists into maps or combining data from multiple sources.
+
+## Syntax
+
+```pseudo
+mapVariable.addEntries(iterableOfMapEntries)
+```
+
+- `mapVariable`: The map you want to add entries into.
+- `iterableOfMapEntries`: An iterable containing `MapEntry` objects (`MapEntry(key, value)`).
+
+## Example
+
+The following example demonstrates how `.addEntries()` can be used to add multiple entries to a `Map`:
+
+```dart
+void main() {
+  Map<String, int> inventory = {
+    'Apples': 5,
+    'Bananas': 3
+  };
+
+  // Creating an iterable of MapEntry objects
+  var newItems = [
+    MapEntry('Oranges', 4),
+    MapEntry('Grapes', 10)
+  ];
+
+  inventory.addEntries(newItems);
+
+  print(inventory);
+}
+```
+
+**Output:**
+
+```shell
+{Apples: 5, Bananas: 3, Oranges: 4, Grapes: 10}
+```