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That would depend on the original field i use. If the field first expected to be told something is invalid then ill use IsInvalid()
Though often i use negate positive since saying 'not InValid' feels clunky -
Shodan4987yThis might be a question for the philosophers, but I also prefer leaving the 'not' to the logical operator by default to avoid double negatives when reading.
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kamar2747yIsValid, but we can do better! Validate on rulesets to avoid many if blocks for validation checking is far clearer IMHO. 😉
Related Rants
Do you prefer to negate a positive function or write a negative one?
Example
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