Impala Documentation

template<class C1, class C2>

int Impala::Core::Column::CopyUnique	(	C1 *	dst,
		C2 *	src,
		int	dstStart,
		int	srcStart,
		int	srcSize
	)			`[inline]`

Copy elements in the range [srcStart,srcSize) of src to dst provided they are not already present in the range [0,dstStart) of dst.

The function returns the number of elements copied to dst.

Definition at line 20 of file CopyUnique.h.

References Contains().

00021 {
00022     int nr = 0;
00023     for (int i=srcStart ; i<srcSize ; i++)
00024     {
00025         if (!Contains(dst, src->Get(i), 0, dstStart + nr))
00026         {
00027             dst->Set(dstStart + nr++, src->Get(i));
00028             if (dstStart + nr >= dst->Capacity())
00029                 return nr;
00030         }
00031     }
00032     return nr;
00033 }

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