How do you get the current stacktrace in Dart for a Completer.CompleteException(exception, stackTrace);

Question

If some code returns a future and determines that the future should return "Error" or "Exception" how can a stack trace be passed to Completer.completeException(exception, stackTrace);

score 188 · Accepted Answer · edited Aug 14 '15 at 08:07

188

If I understand correctly: when you catch an exception in dart, you can also catch the stack trace:

try {
  // something
} catch(e, stacktrace) {
  myCompleter.completeException(e, stacktrace);
}

edited Aug 14 '15 at 08:07

Günter Zöchbauer

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answered Dec 20 '12 at 02:29

John Evans

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To add to this, if you don't have a current exception, just throw one in the try block and catch it yourself. – Justin Fagnani Dec 20 '12 at 03:13
1

Hey, Adam, that sounds like a pretty good answer. You might want to green checkmark it :) – Shannon -jj Behrens Dec 20 '12 at 19:51
2

John's answer is correct, the answer I was looking for is Justin's. – adam-singer Dec 20 '12 at 22:27
1

@JustinFagnani why don't you go ahead and make a separate answer since it was closer to what Adam was looking for. :) – John Evans Dec 20 '12 at 22:58
Where do we get ```myCompleter``` from? – Oliver Dixon Nov 10 '22 at 10:26

cambunctious · Answer 2 · 2019-10-04T16:05:25.567

173

If you're not in a catch block, you can use StackTrace.current

edited Oct 04 '19 at 16:05

answered Jun 05 '18 at 13:52

cambunctious

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This is useful if you need to get a stack trace from any arbitrary location, but if you're within a `catch` block, the chosen answer is better since Dart already provides a `StackTrace` to you. – Abion47 Jan 29 '19 at 21:26

How do you get the current stacktrace in Dart for a Completer.CompleteException(exception, stackTrace);

2 Answers2

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