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#pragma once
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#include <ctime>
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#include <type_traits>
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#include<string>
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#if ((defined(_MSVC_LANG) && _MSVC_LANG >= 201703L) || __cplusplus >= 201703L)
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constexpr static bool cpp_17 = true;
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#else
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constexpr static bool cpp_17 = false;
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#endif
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template <class T>
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inline const char* str(const T& v) {
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return "";
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}
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template <class T>
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constexpr char* aq_itoa(T t, char* buf){
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if constexpr (std::is_signed<T>::value){
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if (t < 0){
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*buf++ = '-';
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t = -t;
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}
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}
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while(t > 0){
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*buf++ = t%10 + '0';
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t /= 10;
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}
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return buf;
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}
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extern std::string base62uuid(int l = 6);
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