concepts_inheritable_stack_object.nim

type
  TrainableLayer = object {.inheritable.}
    ## Layer with trainable parameters
    weight: int
    bias: int

  Conv2DLayer{.final.} = object of TrainableLayer
  LinearLayer{.final.} = object of TrainableLayer

#################################################

type
  Trainable = concept layer
    layer.weight is int
    layer.bias   is int

  Conv2D_v2 = object
    weight: int
    bias: int

  Linear_v2 = object
    weight: int
    bias: int


let a = Conv2DLayer(weight: 1, bias: 10)
let b = Conv2D_v2(weight: 2, bias: 3)

echo a is Trainable
echo b is Trainable