Re: Static Reflection in Scala

 

API overview: http://docs.scala-lang.org/overviews/reflection/overview.html 
and http://docs.scala-lang.org/overviews/macros/usecases.html

Also you can look at code which do very simular task:
 https://github.com/rssh/scala-gopher/blob/master/src/main/scala/gopher/util/ReflectUtil.scala

 (retrieve all vals)
and in 
https://github.com/rssh/scala-gopher/blob/master/src/main/scala/gopher/transputers/ReplicateTransputer.scala
near line 202 you will see  retrieving tree where variable with the same 
type as defined in given class, is defined.


On Sunday, February 8, 2015 at 7:07:50 AM UTC+2, Aravindh S wrote:
>
> Hi  All, I have been trying to achieve the following in scala for quite 
> sometime now, but was not able to do so.  I am looking for a way to pass 
> the name of a val inside a case class along with its type to another 
> method. Below is an example:
>
> case class Person(name:String, age:Int)
>
> object Sample{
>      def apply[T]={}
>      def set(???) = ???
> }
>
>
> I would like the set method to be used like
> Sample[Person].set(p => p.name = "random name") or simply 
> Sample[Person].set(_.name="random name")
>
> The above ideally wont work because I am trying to re assign to a val. But 
> Would like to have something like this. I need to capture the name of the 
> val, type of the val inside the set method and would want the compiler to 
> do a type check when the above method is invoked. 
>
> In C#, We have the expression API which helps in static compile time 
> reflection which will allow you to define methods like above. How do I 
> accomplish the above in scala?
>
>
> Thanks
> Aravindh.S
>

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