Function validate_positive 

pub fn validate_positive<T: PartialOrd + Default + Display>(
    value: T,
    field_name: &str,
) -> Result<T>

Validate that a value is positive

Examples

assert!(validate_positive(10, "count").is_ok());
assert!(validate_positive(0, "count").is_err());
assert!(validate_positive(-5, "count").is_err());