Hi rooters! I am try to nodify the program example of TOrdCollection... But I want to apply this to an object having 2 values x and y. The sorted list will be : x1 y1 x1 y2 x2 y3 x3 y4 ... with x1<x2<x3 and y1<y2 (y3 and y4 may be greater or smaller than y1 and y2). In the example the Compare member function for the objet class containnig only 1 value is: Int_t Compare(TObject *obj) { if (fX == ((Value*)obj)->fX) return 0; else if (fX < ((Value*)obj)->fX) return -1; else return 1; } }; How can I do in my case to define such a Compare member fuction? Thank you Olivier Meplan
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