pub fn validate_label(label: &str) -> Result<&str, IotaNamesError>Expand description
Checks the validity of a label according to these rules:
- length must be in [IOTA_NAMES_MIN_LABEL_LENGTH..IOTA_NAMES_MAX_LABEL_LENGTH]
- must contain only ‘0’..‘9’, ‘a’..‘z’ and ‘-’
- must not start or end with ‘-’