apply a function to an Eff value using the applicative instance
bracket an action with one last action to execute at the end of the program
use the internal effect as one of the stack effects
use the applicative instance of Eff to sequence a list of values, then flatten it
use the applicative instance of Eff to traverse a list of values, then flatten it
create a delayed impure value
create a delayed impure value
create a impure value from an union of effects and a continuation
create a pure value
create an Eff[R, A] value from an effectful value of type T[V] provided that T is one of the effects of R
use the applicative instance of Eff to sequence a list of values
use the applicative instance of Eff to traverse a list of values
create an Eff value for ()
attach a clean-up action to the continuation (if any)