Provides a typedef member type equal to the type from the type list _Ts_ at index _index_. The index should start from 1 up to sizeof...(_Ts_).  
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#include "utility.hpp"
Provides a typedef member type equal to the type from the type list _Ts_ at index _index_. The index should start from 1 up to sizeof...(_Ts_). 
Definition at line 132 of file utility.hpp.