hideEmail static method
隐藏部分邮箱 Hide part of email
Implementation
static String hideEmail(String email, {int start = 1, String replace = '*'}) {
if (!email.contains('@')) return email;
final parts = email.split('@');
if (parts.first.length <= start) return email;
return '${parts.first.substring(0, start)}${replace * (parts.first.length - start)}@${parts.last}';
}