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foo[T: ClassTag] and want to specialize it dynamically to call bar[T <: Bar] if it knows it can; the proper way would be to introduce a typeclass I know, but it's so much boilerplate
@tirumalesh123 lift is just another name for map, with a slightly rearranged signature.map normally looks like def map(fa: F[A])(f: A => B): F[B]. If you rearrange the arguments you get def lift(f: A => B): F[A] => F[B], so you can look at Functor as the api for lifting functions of one argument in F. This extends to Applicative, which lets you lift functions of multiple arguments into F, and ultimately into Monad, which gives you the ability to change the structure of one computation based on the result of another.
et's say I have a method which returns optional if I want to get the value inside optional should I use lifting functions
yeah, pretty much. You should just map (or flatMap) and transform the Option that way. I don't particularly like saying "the value inside the F" because it's misleading in the long run, but it's a decent approximation at first
Deserializer[A](run: Array[Byte] => A)
A => B giving us a Deserializer[B]
Serializer[A]
