Google hopes to make Dart one of the official languages of the web; but before that is feasible it will need some fluent “speakers” first.
var stringVariable = ""; it is better if you do the more descriptive
var name = 'Aaron';
var greeting = 'My name is ' + name + '.';
Can instead be written as:
String name = 'Aaron';
String greeting = 'My name is $name.';