Can I create a new recording using lenses?

Question

If I have a recording type with lenses, is it possible to create a new recording without using basic recordings?

{-# LANGUAGE TemplateHaskell #-} import Control.Lens import Control.Lens.TH data Foo = Foo { _s :: String , _b :: Bool } deriving (Show, Eq) makeLenses ''Foo 

I could make Foo instance of Data.Default and then modifiy def with lenses, but not all record types will have reasonable defaults. Does Control.Lens have its own way of doing this?

Answer 1

No, there is currently no way to do this. You will have to use something like Foo{} by default or not use the lens for recording. However, the lens already has an issue .