One question about "self.hullPoints = [self.handContour[i[0]] for i in self.hullHandContour]"

[hahasofia]

Hi, I'm reading your code and have a question about this line code "self.hullPoints = [self.handContour[i[0]] for i in self.hullHandContour]". I think self.hullHandContour is just like vector < int >, so is "[i[0]]" correct? I think it should be "[i]". Am I right? Thank you!