Function validate 

pub fn validate(input: &str) -> Result<(), ValidationError>

Validates an Ecuadorian IBAN following ISO 13616.

Arguments

• input - A string containing the IBAN (starts with “EC”, 24 characters total).

Errors

Returns ValidationError on validation failure:

• ValidationError::InvalidFormat - Does not start with “EC” or contains invalid characters
• ValidationError::InvalidLength - Not exactly 24 characters
• ValidationError::InvalidCheckDigit - Mod-97 check digit invalid

Examples

use ec_validator::iban;

// Valid IBAN format (must have correct check digits)
let result = iban::validate("EC8912345678901234567890");
// Result depends on check digit validity