Re: Static Reflection in Scala

Hi Oliver,
  You are precisely right. I am trying to generate random values for vals /
vars in case classes so that I can use them as objects for testing. Having
conditions that the length should be from 10 to 15 etc are next level of
customization. First level, I am trying to generate just random values. I
did see scala check first. But I would like to have a syntax as I said
above because it feels much nicer. This is somewhat similar to a C# library
named  NBuilder <https://code.google.com/p/nbuilder/>.

On Sun, Feb 8, 2015 at 6:43 PM, Oliver Ruebenacker <[email protected]> wrote:

>
>      Hello,
>
>   I don't know how to do this, but would assume you need macros.
>
>   I wonder what your use case is, though? If you want to initialize
> objects of arbitrary classes with random values, the problem will be that
> not all values may be valid for a particular class. Maybe it has an Int
> field that must be between 1 and 10. Or a String that must have length 7.
> Or maybe three Int fields that must add up to 15.
>
>   You may end up writing individual value generators for your classes
> anyway. ScalaCheck <http://scalacheck.org/>, for example, supports
> writing and using such generators.
>
>      Best, Oliver
>
> On Sun, Feb 8, 2015 at 12:07 AM, Aravindh S <[email protected]> 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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>
>
>
> --
> Oliver Ruebenacker
> Solutions Architect at Altisource Labs <http://www.altisourcelabs.com/>
> Be always grateful, but never satisfied.
>
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-- 
Nandri (Thanks)
@r@v!ndh.$

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