<table class="text"><tr class="li1">
<td class="ln"><pre class="de1">1
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@H_403_1@</td>
<td class="de1"><pre class="de1">> a = [1,1,2,3,5,2];
[ 1,2 ]

const _g = new Set();
undefined
a.map(i=>_g.add(i));
[ Set { 1,5 },  Set { 1,5 } ]
_g
Set { 1,5 }
Array.from(_g);
[ 1,5 ]

 @H_403_1@</td>
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