Allow callers to detect DispatchQueue drops
#854
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The return value of `DispatchQueue::operator+=` should signify whether the lambda was pended to the queue or not. Right now it's void, so it's trivial to just return a boolean here instead.
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hham
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Feb 26, 2016
Allow callers to detect `DispatchQueue` drops
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The return value of
DispatchQueue::operator+=should signify whether the lambda was pended to the queue or not. Right now it's void, so it's trivial to just return a boolean here instead.