camelCase function
Implementation
String camelCase(String text) {
String capitalize(Match m) =>
m[0]!.substring(0, 1).toUpperCase() + m[0]!.substring(1);
String skip(String s) => "";
return text.splitMapJoin(new RegExp(r'[a-zA-Z0-9]+'),
onMatch: capitalize, onNonMatch: skip);
}