subtype

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Scala related trait, abstract types

I have 2 related traits.Dao will be used be a class and DaoHelper will be used by Dao\'s companion object.I would like trait Dao to be able use functions defined in DaoHelper, the only way I could fig[详细]

2023-04-05 06:44 分类：问答
Is a Path Dependent Type a subtype?

trait A { trait B { def foo: A.this.B = new B{} def bar: A#B= foo def baz: A.this.B = bar // type mismatch; found : A#B required: A.this.B[详细]

2023-03-05 14:55 分类：问答
Subclasses and return types

let\'s say I wanted to have something like the following: abstract class PDF[T, S <: PDF[T, _]] { def fit(obs: Seq[T], weights: Seq[Double]): S[详细]

2023-02-19 08:25 分类：问答
Interfaces, inheritance and subtyping

I have the following JAVA mess that is very unclear to me: a generic Interface with two generic Types A and B, such as AIter<A,B>[详细]

2023-01-26 21:11 分类：问答
PAGECURL ANIMATION SUBTYPE

I know this has been asked a thousand times and people will say that the @pagecurl will get rejected.[详细]

2023-01-18 11:06 分类：问答
What are the alternatives to subtype polymorphism in scala?

I\'m interested to know the complete set of alternatives to subtyp开发者_如何学运维e polymorphism in scala.The basic tools for of achieving statically-checkable polymorphism in Scala are[详细]

2023-01-13 08:03 分类：问答
Using Sub-Types And Return Types in Scala to Process a Generic Object Into a Specific One

I think this is about covariance but I\'m weak on the topic... I have a generic Event class used for things like database persistance, let\'s say like this:[详细]

2022-12-27 17:14 分类：问答
<Subtype>Designer</Subtype> Added then removed by Visual Studio on load/unload

Anyone see this before?I have a large Visual Studio project that keeps adding [Subtype]Designer[/Subtype] to my .vcproj then removing it on the next open and close of the project.There is only one cla[详细]

2022-12-08 09:24 分类：问答