String interpolation not working in combination with an attribute of an instance (<object>.<attribute>)

[DartBot]

This issue was originally filed by andreasschr...@gmail.com

---

What steps will reproduce the problem?

1. Just execute the following
   main() {
     Example e = new Example('myString');
     print('string: $e.test');
   }

class Example{
 String test;
 Example(this.test);
}

What is the expected output? What do you see instead?
Excpected is: "string: myString"
Ootput is: "string: Object.test"

What version of the product are you using? On what operating system?
I used the dartboard at dartlang.org

[DartBot]

This comment was originally written by gplt...@gmail.com

---

The DartBoard at dartlang.org is out of date. If you use the Dart IDE you will get the expected output.

string: Instance of 'Example'.test

I am using: Version 0.1.0.201205110807, Build 7552,Dart SDK version 7552, Dartium version

[DartBot]

This comment was originally written by gplta...@gmail.com

---

Notice the diff between printing the instance type vs the instance property value

main() {
  Example e = new Example('myString');
  print('String: $e.test');
  print("String: " + e.test);
}

class Example{
 String test;
 Example(this.test);
}

output
String: Instance of 'Example'.test
String: myString

[kasperl]

You can use non-identifier expressions in string interpolation by enclosing it in ${...} like this:

   'String: ${e.test}'

---

Added Area-Language, AsDesigned labels.