| [eigen] Const referencing of matrix indexes |
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- To: eigen@xxxxxxxxxxxxxxxxxxx
- Subject: [eigen] Const referencing of matrix indexes
- From: Daniel Stonier <d.stonier@xxxxxxxxx>
- Date: Fri, 5 Feb 2010 14:19:48 +0900
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I just noticed the matrixbase operator[](int index) const (and
operator()(...) const) both return "const Scaler" rather than "const
Scaler&". Just out of curiosity, what is the reasoning behind this?
I've always thought it was standard practice (reading from e.g. the
c++ faq-lite) and faster for large objects to return the const
reference.
Regards,
Daniel.
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