toUpperCase method
Converts all characters in this string to upper case.
If the string is already in all upper case, this method returns this
.
Implementation
String? toUpperCase() {
return value?.toUpperCase();
}
Converts all characters in this string to upper case.
If the string is already in all upper case, this method returns this
.
String? toUpperCase() {
return value?.toUpperCase();
}