Mod : Veiler.Lampads - add in-place val
Mod : Veiler.Lampads - Refactor(Ass -Change Name-> Asgn, move some codes to other places)
Mod : Veiler.Lampads - Change ret's cast to forwarding cast
Fix : Veiler.Lampads - Fix If's return type deduction
Mod : Veiler.Lampads - Add Ret, improve return type implementation