[Term Entry] Dart Map: removeWhere()

content/dart/concepts/map/terms/remove-where/remove-where.md

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+---
+Title: '.removeWhere()'
+Description: 'Removes all key–value pairs from a Map that satisfy a given condition.'
+Subjects:
+  - 'Code Foundations'
+  - 'Computer Science'
+Tags:
+  - 'Dart'
+  - 'Map'
+  - 'Methods'
+CatalogContent:
+  - 'learn-dart'
+  - 'paths/computer-science'
+---
+
+In Dart, the **`.removeWhere()`** method removes key–value pairs from a `Map` when a given condition evaluates to `true`. The condition is provided as a function that is applied to each key and value in the map.
+
+## Syntax
+
+```pseudo
+map.removeWhere((key, value) => condition);
+```
+
+**Parameters:**
+
+- `key`: The current key in the map.
+- `value`: The value associated with the key.
+- `condition`: A function that returns `true` for entries that should be removed.
+
+**Return value:**
+
+The `.removeWhere()` method returns `void`. The map is modified in place.
+
+## Example: Removing entries based on a condition
+
+In this example, entries with scores below 60 are removed from the map:
+
+```dart
+void main() {
+  Map<String, int> scores = {
+    'Alice': 85,
+    'Bob': 42,
+    'Charlie': 67,
+  };
+
+  // Remove entries where the score is below 60
+  scores.removeWhere((name, score) => score < 60);
+
+  print(scores);
+}
+```
+
+The output of this code is:
+
+```shell
+{Alice: 85, Charlie: 67}
+```