Ordering of implicit definitions matters

[scabug]

The following example program worked with scalac 2.7.1.final, but with a current SVN version the ordering of implicit definitions must have changed. This might be intentional, but I did not find it mentioned on the changes list.

class MyImplicit {

  // With this implicit, the example works
  // with scalac 2.7.1.final and 2.7.1.r15731-b20080811151138
  // implicit def c2powerc(c: C) = new PowerC(c);

  class UseIt {
    def m(c : C) = c.power
  }

  class C {}

  class PowerC(c: C) {
    def power = "Power!"
  }

  // With this implicit, the example works
  // with scalac 2.7.1.final, but results in
  //   error: value power is not a member of MyImplicit.this.C
  // with 2.7.1.r15731-b20080811151138.
  implicit def c2powerc(c: C) = new PowerC(c);
}

[scabug]

Imported From: https://issues.scala-lang.org/browse/SI-1209?orig=1
Reporter: wdietl

[scabug]

@SethTisue said:
see #801

[scabug]

@dragos said:
This is intentional. Add an explicit return type to the implicit methods to make them visible before their definition.