apply a function to an Eff value using the applicative instance
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 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 ()