id summary reporter owner description type status milestone component version severity resolution keywords cc 8148 mpl::is_lambda_expression bug James Hirschorn Aleksey Gurtovoy "The metafunction boost::mpl::is_lambda_expression does not work correctly. My attached code example give a metafunction class for which is_lambda_expression evaluates as false. While is_lambda_expression is not a documented feature of boost::mpl, it is available in the boost::mpl namespace. Moreover, it is used in the implementation of boost::mpl::transform, and presumably results in unintended behaviour there. The package boost::tti (in the boost/trunk) has boost::tti::detail::is_lambda_expression. I have confirmed that this works correctly on my example (see attached file). The tti author has informed me that tti depends on mpl. Perhaps then, boost::mpl::is_lambda_expression should be replaced by tti's." Bugs new To Be Determined mpl Boost 1.53.0 Problem is_lambda_expression eldiener@… jeffrey.hellrung@… nathan.crookston@…