Hi Nicolas, I'll issue an error in case the matrices are not compatible. You'll have to create a new matrix with the right dimensions before assignment. Thanks for the remarks. Cheers, Fons. Nicolas Produit wrote: > > Let me reask this question that recived now answer yet: > > In code for TMatrix operator = > if the target matrix is not compatible with source matrix you silentely > do nothing. > I would have imagined that we must distroy the target matrix and create > a new one with correct dimention? > Or at least issue a warning message? > Anybody can explain me the reason and is this behaviour also implicit in > other part of root code? > Is this common practise in C++? > > TMatrix &TMatrix::operator=(const TMatrix &source) > { > if (this != &source && AreCompatible(*this, source)) { > TObject::operator=(source); > memcpy(fElements, source.fElements, fNelems*sizeof(Real_t)); > } > return *this; > } > > -- > Nicolas Produit > INTEGRAL Science Data Center Phone: +41 22 950 91 40 > 16, Chemin d'Ecogia Fax: +41 22 950 91 33 > CH-1290 Versoix www: http://isdc.unige.ch/ -- Org: CERN, European Laboratory for Particle Physics. Mail: 1211 Geneve 23, Switzerland E-Mail: Fons.Rademakers@cern.ch Phone: +41 22 7679248 WWW: http://root.cern.ch/~rdm/ Fax: +41 22 7677910
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