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scalascala-option

Compact syntax for get head of list as Option


Is there a compact way to get the head of a list as a Some when the list is non-empty, getting None otherwise?

This is what I am currently doing,

val ms = moves.filter { ...some predicate... }
if (ms.nonEmpty) Some(ms.head) else None

Solution

  • Try headOption. The API docs are your friend.

    Note also that find does exactly a filter plus headOption: it takes one item if there and puts it in an option, and otherwise gives None.