c++中int转string
在muduo库中看见的一个函数,写的有点秀
const char digits[] = "9876543210123456789"; const char* zero = digits + 9; static_assert(sizeof(digits) == 20, "wrong number of digits"); // Efficient Integer to String Conversions, by Matthew Wilson. template<typename T> size_t convert(char buf[], T value) { T i = value; char* p = buf; do { int lsd = static_cast<int>(i % 10); i /= 10; *p++ = zero[lsd]; } while (i != 0); if (value < 0) { *p++ = '-'; } *p = '\0'; std::reverse(buf, p); return p - buf; }
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