Final class FH\IO<+T>

Functions that create, combine, and unsafely execute I/O actions.

Constructor

__construct((function(): T) $action)

Construct an I/O action which when performed executes the given (potentially effectful) procedure.

Static methods

pure(T $x): IO<T>

Return an I/O action that has no effects and returns the given value.

Instance methods

unsafePerform(): T

Perform this I/O action, including any effects it may have.

map<TM>((function(T): TM) $f): IO<TM>

Return an I/O action that performs this I/O action and transforms its result with the given function.

bind<TM>((function(T): IO<TM>) $f): IO<TM>

Combine this I/O action with a Kleisli arrow.