[quote]> 3 in [1,2,3,4]
true
> -1 in [1,2,-1,-2]
false[/quote]
testing negative number, it always returns false, no matter this number is actually in the array.
true
> -1 in [1,2,-1,-2]
false[/quote]
testing negative number, it always returns false, no matter this number is actually in the array.