singleOrNull

Common
JVM
JS
Native
1.0
fun < T > Sequence < T > . singleOrNull ( ) : T ?
(source)

Returns single element, or null if the sequence is empty or has more than one element.

The operation is terminal .

Common
JVM
JS
Native
1.0
inline fun < T > Sequence < T > . singleOrNull (
predicate : ( T ) -> Boolean
) : T ?

(source)

Returns the single element matching the given predicate , or null if element was not found or more than one element was found.

The operation is terminal .