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17 lines
575 B
17 lines
575 B
/**
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* Copyright (c) 2018 Niklas Rosenstein
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* MIT licensed.
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*
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* @description Some useful type traits.
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*/
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#pragma once
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namespace niklasrosenstein {
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/* Adds "const" to a type only if the other type is const. */
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template <typename SRC, typename DST> struct add_const_from { using type = DST; };
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template <typename SRC, typename DST> struct add_const_from<const SRC, DST> { using type = typename std::add_const<DST>::type; };
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template <typename SRC, typename DST> using add_const_from_t = typename add_const_from<SRC, DST>::type;
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} // namespace niklasrosenstein
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