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Answers and rating deltas for

How can I understand about the Promise all in this case?

Author Votes Δ
T.J. Crowder 5 +0.60
EugenSunic 2 +0.45
jperl 2 +0.88
Mulan 1 -1.16
Last visited: Sep 5, 2020, 12:36:14 PM