VM doesn't recognize implicit class interfaces

[sethladd]

This example works in Dartboard:

class Duck {
  quack() => 'complicated enterprise n-tier quack';
}

class MockDuck implements Duck {
  quack() => 'quack for testing';
}

main() {
  var mock = new MockDuck();
  print(mock is Duck); // true!
}

however, when executed via the VM, this error is generated:

Error: line 5 pos 7: class 'Duck' is used where an interface is expected
class MockDuck implements Duck {

(The Editor doesn't indicate any warnings)

Not sure if it's a Dartboard error or a VM error.

[iposva-google]

Removed the owner.

[iposva-google]

Set owner to @mhausner.
Added Accepted label.

[iposva-google]

Issue #1977 has been merged into this issue.

[DartBot]

This comment was originally written by @mhausner

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Issue #2496 has been merged into this issue.

[DartBot]

This comment was originally written by @mhausner

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Fixed in CL 6607

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Added Fixed label.

[DartBot]

This comment was originally written by [email protected]

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Is it extends or implements. I see a different notation in language tour section.

class SmartTelevision extends Television

[sethladd]

Shiv is talking about http://www.dartlang.org/language-tour/#classes

Shiv, this bug is talking about something different. The Television example in the Language Tour is referring to classical class inheritance. Sorry for the confusion.

[sethladd]

Hi Shiv,

The best place for questions about the language would be our mailing list: https://groups.google.com/a/dartlang.org/forum/#!forum/misc

Hope to see you there,
Seth