Dart List Filters

Introduction

Dart filters lists through the List.where and List.retainWhere methods. The where function takes one argument: a boolean function that is applied to each element of the list. If the function evaluates to true then the list element is retained; if the function evaluates to false, the element is removed.

Calling

theList.retainWhere(foo)

is practically equivalent to setting

theList = theList.where(foo)

Examples

Filtering a list of integers

[-1, 0, 2, 4, 7, 9].where((x) => x > 2) --> [4, 7, 9]

Conclusion

In this page (written and validated by A. Gawali) you learned about Dart List Filters . What's Next? If you are interested in completing Dart tutorial, your next topic will be learning about: Dart Pub.

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