Check if array exists?

hi

i have a list with 10 (array as double(x,y)) in it

i would like to go in a loop and take out duplicated arrays

is it possible??

with a string it is simple

Code:

  If l.IndexOf("123") > -1 Then
'string exists already
End If  

but if i try this with an array of doubles it doesnot work


EDIT: i think i will just use a string and the split it to an array of doubles...

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