Scala Either : simplest way to get a property that exists on right and left -


i have template using valueobject might 1 of 2 flavours depending on used in our app. importing either:

valueobject: either[ objecta, objectb ]

both objects have identically named property on them retrieve calling

valueobject.propertya

which doesn't work.

what concise/ best way of doing this?

assuming 2 objects have same type (or supertype / trait) defines property - can use merge returns left if exists , right otherwise, lowest common type of both:

scala> class myclass {  | def propertya = 1  | } defined class myclass  scala> val e1: either[myclass, myclass] = left(new myclass) e1: either[myclass,myclass] = left(myclass@1e51abf)  scala> val e2: either[myclass, myclass] = right(new myclass) e2: either[myclass,myclass] = right(myclass@b4c6d0)  scala> e1.merge.propertya res0: int = 1  scala> e2.merge.propertya res1: int = 1 

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