getInitials function
Retrieves a name's initials
Example 'Abiud Orina' returns 'AO'
Implementation
String getInitials(String string) {
if (string.isEmpty) return '';
final String initials =
string.trim().split(RegExp(' +')).map((String s) => s[0]).join();
return (initials.length > 2) ? initials.substring(0, 2) : initials;
}