Boost C++ Libraries

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Function template metadata

Function template metadata

boost::histogram::axis::traits::metadata — Returns reference to metadata of an axis.

Synopsis

// In header: <boost/histogram/axis/traits.hpp>


template<typename Axis> decltype(auto) metadata(Axis && axis);

Description

If the expression x.metadata() for an axis instance x (maybe const) is valid, return the result. Otherwise, return a reference to a static instance ofboost::histogram::axis::null_type.

Parameters:

axis

any axis instance