# Map #mapKeysNotNull #mapValuesNotNull

**URL:** <https://discuss.kotlinlang.org/t/map-mapkeysnotnull-mapvaluesnotnull/12369>\
**Category:** Libraries\
**Created:** [April 17, 2019, 7:15am UTC](https://discuss.kotlinlang.org/t/map-mapkeysnotnull-mapvaluesnotnull/12369 "2019-04-17T07:15:15Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![kvolkers](https://avatars.discourse-cdn.com/v4/letter/k/e8c25b/32.png) [@kvolkers](https://discuss.kotlinlang.org/u/kvolkers)\
**Post date:** [April 17, 2019, 7:15am UTC](https://discuss.kotlinlang.org/t/map-mapkeysnotnull-mapvaluesnotnull/12369/1 "2019-04-17T07:15:15Z")

</div>

In the stdlib \_Collections.kt it would be nice to have a Map `.mapKeysNotNull` and `.mapValuesNotNull`.

Modifying the Map `.mapKeys` and `.mapValues` akin to Iterable `.mapNotNull`.