CamelCase in Dart

Example for versions Dart 1.1.1

splitMapJoin splits the string into parts that match the pattern and parts that don’t match it, converts each part using corresponding function (in this case capitalizes matches and removes non-matches), and combines the results into a new string. 

import 'dart:io';

main() {
  String text = stdin.readLineSync().toLowerCase();
  String capitalize(Match m) => m[0].substring(0, 1).toUpperCase() + m[0].substring(1);
  String skip(String s) => "";
  print(text.splitMapJoin(new RegExp(r'[a-z]+'), onMatch: capitalize, onNonMatch: skip));  
}