Stream: announcements

Topic: List.drop, dropFirst, dropLast

Anton (Oct 31 2023 at 12:42):

With today's nightly the following things have changed to the List builtins:

• List.dropFirst now takes an extra argument with the number of elements to drop from the front.
• Similarly List.dropLast now takes an extra argument with the number of elements to drop from the back.
• List.drop has been renamed to List.dropFirst

So, to update your roc code:

• change calls to List.dropFirst myList with List.dropFirst myList 1
• replace all |> List.dropFirst with |> List.dropFirst 1
• change calls to List.dropLast myList with List.dropLast myList 1
• replace all |> List.dropLast with |> List.dropLast 1
• replace all List.drop with List.dropFirst

Last updated: Jul 26 2025 at 12:14 UTC