Why do you think it’s a bad idea? Both you and OP are in agreement that you should validate early, which seemed to be what your first comment was about. Is it encoding that the data has been validated in the typesystem that you disagree with?
I disagree that parsing is validating. For example, you could give me a valid ISO date time string, but I want a shipping date and you gave me something in the past. It parses, but is not valid.
I disagree that validating early is bad because some other part of the code might also validate later and possibly do it differently. Yes, that’s bad, but not a reason to not validate early.
Why do you think it’s a bad idea? Both you and OP are in agreement that you should validate early, which seemed to be what your first comment was about. Is it encoding that the data has been validated in the typesystem that you disagree with?
I disagree that parsing is validating. For example, you could give me a valid ISO date time string, but I want a shipping date and you gave me something in the past. It parses, but is not valid.
I disagree that validating early is bad because some other part of the code might also validate later and possibly do it differently. Yes, that’s bad, but not a reason to not validate early.