class X::Promise::CauseOnlyValidOnBroken

Error due to asking why an unbroken promise has been broken.

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class X::Promise::CauseOnlyValidOnBroken is Exception { }

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This exception is thrown when code expects a Promise to be broken, and asks why it has been broken, but the Promise has in fact, not yet been broken.

Methods §

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method promise()

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Returns the Promise that was asked about.

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method status()

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Returns the status the Promise had at that time.