spdlog: fmt - support std::span in to_hex
#2228
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`std::span` does not have `const_iterator`. this prevents `to_hex` from being used with `std::span<>`. to fix this, we provide an explicit overload. compare: https://cplusplus.github.io/LWG/issue3320
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Thanks @timblechmann |
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std::spandoes not haveconst_iterator. this preventsto_hexfrombeing used with
std::span<>. to fix this, we provide an explicitoverload.
compare: https://cplusplus.github.io/LWG/issue3320