kotlin-stdlib / kotlin.ranges / first first Common JVM JS Native 1.7 fun IntProgression . first ( ) : Int (source) fun LongProgression . first ( ) : Long (source) fun CharProgression . first ( ) : Char (source) fun UIntProgression . first ( ) : UInt (source) fun ULongProgression . first ( ) : ULong (source) Returns the first element. Exceptions NoSuchElementException - if the progression is empty.