Update description of Thread/Task::return_value(). #6135
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tjhei
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Apr 2, 2018
| * <code>std::unique_ptr</code> objects can not be copied. In other words, | ||
| * to get the pointer out of the object returned from the thread, it needs | ||
| * to be moved, and in order to be moved, the current function needs to | ||
| * return a writable reference. |
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I think non-const is better than writable.
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I've updated the text as requested. |
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This is a follow-up to #6114, given that we had some discussion there.