firstThatOrNull

inline fun <E> KoneIterator<E>.firstThatOrNull(predicate: (E) -> Boolean): E?(source)
inline fun <E> KoneIterable<E>.firstThatOrNull(predicate: (E) -> Boolean): E?(source)
inline fun <E> KoneSequence<E>.firstThatOrNull(predicate: (E) -> Boolean): E?(source)