Function1

@FunctionalInterface interface Function1<A : Any!, R : Any!> : Serializable

Represents a function with a single argument.

static val serialVersionUID: Long

andThen	`open fun <R2 : Any!> andThen(after: (in R) -> out R2): ((A) -> R2)!` Returns a composed function that first applies this function to the given input and then applies the function passed as after to the result.
apply	`abstract fun apply(value: A): R` Applies this function to the given argument.
compose	`open fun <A2 : Any!> compose(before: (in A2) -> out A): ((A2) -> R)!` Returns a composed function that first applies the before function and then applies itself to the result.
constant	`open static fun <T1 : Any!, R : Any!> constant(value: R): ((T1) -> R)!` Returns a function that always returns the constant regardless of the passed arguments.
identity	`open static fun <T : Any!> identity(): ((T) -> T)!` Returns a function that always returns its input argument.
liftTry	`open static fun <L : Any!, R : Any!> liftTry(partial: (in L) -> out R): ((L) -> Try<R>!)!` Lifts given `partial` into a total function that returns a `Try` result.