text: #ifndef BASE_CUSTOM_SPAN_HPP________
  #define BASE_CUSTOM_SPAN_HPP________
  
  
  #ifndef span_FEATURE_MAKE_SPAN
  #define span_FEATURE_MAKE_SPAN 1
  #endif
  #ifndef span_FEATURE_MAKE_SPAN_TO_STD
  #define span_FEATURE_MAKE_SPAN_TO_STD 17
  #endif
  
  
  #include "nonstd/span.hpp"
  
  
  #endif // BASE_CUSTOM_SPAN_HPP________
  