Returns the first element that satisfies the given predicate test
.
Iterates through elements and returns the first to satisfy test
.
If no element satisfies test
, the result of invoking the orElse
function is returned. If orElse
is omitted, it defaults to throwing a StateError.
E firstWhere(bool test(E value), {E orElse()}) { for (E element in this) { if (test(element)) return element; } if (orElse != null) return orElse(); throw IterableElementError.noElement(); }
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Licensed under the Creative Commons Attribution-ShareAlike License v4.0.
https://api.dartlang.org/stable/2.0.0/dart-collection/SetMixin/firstWhere.html