isIPv4 static method
Checks if string is IPv4.
Implementation
static bool isIPv4(String s) =>
hasMatch(s, r'^(?:(?:^|\.)(?:2(?:5[0-5]|[0-4]\d)|1?\d?\d)){4}$');
Checks if string is IPv4.
static bool isIPv4(String s) =>
hasMatch(s, r'^(?:(?:^|\.)(?:2(?:5[0-5]|[0-4]\d)|1?\d?\d)){4}$');