TVecSmallInt.SetSubIndex Method

Overload List

#SignatureDescription
1procedure SetSubIndex(BeginIndex: Integer; EndIndex: Integer);Defines a subarray.
2procedure SetSubIndex(const Src: TMtxVecInt; BeginIndex: Integer; EndIndex: Integer);Defines a sub-vector.

Overload 1: procedure SetSubIndex(BeginIndex: Integer; EndIndex: Integer);

Defines a subarray.

#NameTypeDescription
1BeginIndexInteger
2EndIndexInteger

Result: stored in self (calling object)

Remarks:

The method will define a sub array starting at BeginIndex and ending at EndIndex (inclusive). All values of the original vector/matrix will be preserved. An exception will be raised if an attempt is made to change the size of calling vector/matrix.

A subarray is array which does not have its own memory allocated. Instead it adopts the memory of the source object and all operations done on the either of the objects affect the same elements. The use of subarrays increases CPU cache reuse, lower's memory requirements, increases application performance and improves code readability.

To again obtain a view of the full vector see TMtxVecBase.SetFullRange

Overload 2: procedure SetSubIndex(const Src: TMtxVecInt; BeginIndex: Integer; EndIndex: Integer);

Defines a sub-vector.

#NameTypeDescription
1SrcTMtxVecIntsource TVecInt or TMtxInt
2BeginIndexInteger
3EndIndexInteger

Result: stored in self (calling object)

Remarks:

Define a subvector of the Src vector starting at BeginIndex and ending at EndIndex (inclusive).