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Answers and rating deltas for

In Scala, why does Array("1") ++ "-3" output Array[Any] = Array(1, -, 3)?

Author Votes Δ
James Whiteley 7 +3.62
senjin.hajrulahovic 3 +0.92
RAGHHURAAMM 3 +1.80
Archer 2 -1.65
uh_big_mike_boi 0 -4.03
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