I'm aware of this as well as go(lang)'s https://github.com/go-playground/validator https://github.com/go-playground/validator, so you are right, I'm wondering a

I'm aware of this as well as go(lang)'s https://github.com/go-playground/validator https://github.com/go-playground/validator, so you are right, I'm wondering about a more implicit validator like what Pydantic does when a value is assigned, versus an explicit call to validate().