Dear Luke, thanks for your answers
If SelectScecario is used for other purposes, then give an explicit
cast function
Sure, as I mentioned, we have different transformations and it would be worth
to filter a list of transformations by a particular type or even apply the list
of
On Tue, Dec 1, 2009 at 4:44 PM, Luke Palmer lrpal...@gmail.com wrote:
Existential types only buy you power when the quantified variable
appears more than once on the right hand side, for example: forall a.
Num a = (a,a). But even those can usually be factored out into more
direct
Dear all, I wrote the following types:
class Transformation t where (+) :: t - SPLModel - InstanceModel - InstanceModel
data Configuration = forall t . Transformation t = Configuration (FeatureExpression, [t]) type ConfigurationKnowledge = [Configuration]
I tried to write a function that
On Tue, Dec 1, 2009 at 1:00 PM, rodrigo.bonifacio
rodrigo.bonifa...@uol.com.br wrote:
Dear all, I wrote the following types:
class Transformation t where
(+) :: t - SPLModel - InstanceModel - InstanceModel
data Configuration = forall t . Transformation t = Configuration
On Tue, Dec 1, 2009 at 11:21 AM, David Menendez d...@zednenem.com wrote:
On Tue, Dec 1, 2009 at 1:00 PM, rodrigo.bonifacio
rodrigo.bonifa...@uol.com.br wrote:
Dear all, I wrote the following types:
class Transformation t where
(+) :: t - SPLModel - InstanceModel - InstanceModel
data
Thanks Luke.
In fact I, will have different implementations of the Transformation type. Something like:
data SelectScenarios = SelectScenarios {
scIds :: [Id]
}
And then I should be able to make SelectScenarios a kind of Transformation. So I think that I really need a class. What do you think
newtype Transformation = Transformation {
(+) :: SPLModel - InstanceModel - InstanceModel
}
data SelectScenarios = SelectScenarios { scIds :: [Id] }
scenarioTransform scenario = Transformation $ \spl inst - something
testScenario = SelectScenarios []
test = scenarioTransform testScenario
On Tue, Dec 1, 2009 at 4:21 PM, rodrigo.bonifacio
rodrigo.bonifa...@uol.com.br wrote:
Thanks Luke.
In fact I, will have different implementations of the Transformation type.
Something like:
data SelectScenarios = SelectScenarios {
scIds :: [Id]
}
What is this different type buying you?
