Trait dialoguer::Validator [−][src]
Trait for input validators.
A generic implementation for Fn(&str) -> Result<(), E>
is provided
to facilitate development.
Associated Types
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fn validate(&mut self, input: &T) -> Result<(), Self::Err>
[src]
Invoked with the value to validate.
If this produces Ok(())
then the value is used and parsed, if
an error is returned validation fails with that error.