Like Functor
and Apply
, Applicative
functors also compose naturally with each other.
Like Functor
and Apply
, Applicative
functors also compose naturally with each other. When
you compose one Applicative
with another, the resulting pure
operation will lift the passed value into one context, and the result
into the other context:
Applicative
is a generalization of Monad
, allowing expression
of effectful computations in a pure functional way.
Applicative
is a generalization of Monad
, allowing expression
of effectful computations in a pure functional way.
Applicative
is generally preferred to Monad
when the structure of a
computation is fixed a priori. That makes it possible to perform certain
kinds of static analysis on applicative values.
This method takes any value and returns the value in the context of the functor.
This method takes any value and returns the value in the context of
the functor. For many familiar functors, how to do this is
obvious. For Option
, the pure
operation wraps the value in
Some
. For List
, the pure
operation returns a single element
List
:
This method has been deprecated in favor of macro assertion and will be removed in a future version of ScalaTest. If you need this, please copy the source code into your own trait instead.
This method has been deprecated in favor of macro assertion and will be removed in a future version of ScalaTest. If you need this, please copy the source code into your own trait instead.
This method has been deprecated in favor of macro assumption and will be removed in a future version of ScalaTest. If you need this, please copy the source code into your own trait instead.
This method has been deprecated in favor of macro assumption and will be removed in a future version of ScalaTest. If you need this, please copy the source code into your own trait instead.
Please use 'an [Exception] should be thrownBy { ... }' syntax instead
This expect method has been deprecated. Please replace all invocations of expect with an identical invocation of assertResult instead.
This expect method has been deprecated. Please replace all invocations of expect with an identical invocation of assertResult instead.
This expectResult method has been deprecated. Please replace all invocations of expectResult with an identical invocation of assertResult instead.
This expectResult method has been deprecated. Please replace all invocations of expectResult with an identical invocation of assertResult instead.
Applicative
extendsApply
by adding a single method,pure
:def pure[A](x: A): F[A]