# Programming in Kotlin: Collections & Lambdas, Episode 22: Challenge: Use forEach & map | raywenderlich.com

**URL:** <https://forums.kodeco.com/t/programming-in-kotlin-collections-lambdas-episode-22-challenge-use-foreach-map-raywenderlich-com/178275>\
**Category:** 🎓 Courses & Articles\
**Created:** [September 14, 2022, 9:25am UTC](https://forums.kodeco.com/t/programming-in-kotlin-collections-lambdas-episode-22-challenge-use-foreach-map-raywenderlich-com/178275 "2022-09-14T09:25:55Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![fleepgeek](https://assets.chunter.kodeco.com/user_avatar/forums.kodeco.com/fleepgeek/32/108464_2.png) [@fleepgeek](https://forums.kodeco.com/u/fleepgeek)\
**Post date:** [September 14, 2022, 9:25am UTC](https://forums.kodeco.com/t/programming-in-kotlin-collections-lambdas-episode-22-challenge-use-foreach-map-raywenderlich-com/178275/1 "2022-09-14T09:25:55Z")

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Practice what you have learned about using lambdas and collections with this series of hands-on coding challenges.

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This is a companion discussion topic for the original entry at [https://www.raywenderlich.com/33863948-programming-in-kotlin-collections-lambdas/lessons/22](https://www.raywenderlich.com/33863948-programming-in-kotlin-collections-lambdas/lessons/22)