EasyFormFieldValidator<T> typedef

EasyFormFieldValidator<T> = String? Function(T value, [Map<String, dynamic>? values])

Signature for validating a form field.

Returns an error string to display if the input is invalid, or null otherwise.

Used by EasyFormField.validator.

Implementation

typedef EasyFormFieldValidator<T> = String? Function(T value,
    [Map<String, dynamic>? values]);