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    cxxomfort
    rel.20210622
    
   Simple backports for C++ - http://ryan.gulix.cl/fossil.cgi/cxxomfort/ 
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Backports related to Standard Header <utility>
Interfaces defined in this file:
move() (C++11) - moves an object from an "rvalue reference".declval() (C++11) - declare variables in an unevaluated context.exchange() (C++14) - propagate a modification to two variables.integer_sequence  , index_sequence  (C++14) (from C++11 onward only).as_const() , as_ptr_const() (C++17) - a const view of data.in_place_t , in_place_type_t (C++17).in_range() (C++20) - check if a type fits within the constraints of an integer type..See also <type_traits> , <tuple> , header/utility @ cppreference
See also cxxo-sup-utility (supplemental).
 1.8.13