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Doc: add aliasing in common pitfaffs.

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Gael Guennebaud 2018-05-29 22:37:47 +02:00
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doc/Pitfalls.dox
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@ -2,10 +2,16 @@ namespace Eigen {
/** \page TopicPitfalls Common pitfalls /** \page TopicPitfalls Common pitfalls
\section TopicPitfalls_template_keyword Compilation error with template methods \section TopicPitfalls_template_keyword Compilation error with template methods
See this \link TopicTemplateKeyword page \endlink. See this \link TopicTemplateKeyword page \endlink.
\section TopicPitfalls_aliasing Aliasing
Don't miss this \link TopicAliasing page \endlink on aliasing,
especially if you got wrong results in statements where the destination appears on the right hand side of the expression.
\section TopicPitfalls_auto_keyword C++11 and the auto keyword \section TopicPitfalls_auto_keyword C++11 and the auto keyword
In short: do not use the auto keywords with Eigen's expressions, unless you are 100% sure about what you are doing. In particular, do not use the auto keyword as a replacement for a Matrix<> type. Here is an example: In short: do not use the auto keywords with Eigen's expressions, unless you are 100% sure about what you are doing. In particular, do not use the auto keyword as a replacement for a Matrix<> type. Here is an example: