(a => [...new Set(a)])([3, 4, 4, 3, 6, 3])
is [3, 4, 6] not [4, 6, 3]
[3, 4, 6]
[4, 6, 3]
To get the correct result you'd have to do
[...new Set(a.reverse())].reverse()
which is... quite a lot.
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is
[3, 4, 6]not
[4, 6, 3]To get the correct result you'd have to do
which is... quite a lot.