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MtxVec VCL
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Vector.GroupSum Method
Vector Record | Vector Members | MtxExpr Namespace | public
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Sums items from Src with matching corresponding indexes from Bins and places result in self.

Pascal
function GroupSum(const Bins: TMtxVecInt; const Src: TMtxVec; const BinsMax: integer = -1): TVec; overload;
Description

The size of self is set to Bins.Max+1 provided that sufficient memory is available. BinsMax with default value of -1 indicates that Bins.Max call is made internally. The routine does not perform additional range checking, if BinsMax is provided explicitely (memory overwrite is possible).

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