Method withPrecision

visage_utils/string_utils.h:226–252

    }

    String withPrecision(int precision) const {
      size_t pos = find('.');

      if (pos == std::u32string::npos)
        return string_;

      pos += precision + 1;
      if (pos < string_.length()) {
        std::u32string result = string_.substr(0, string_[pos - 1] == '.' ? pos - 1 : pos);
        bool carry = string_[pos] >= '5';
        while (pos > 0 && carry) {
          --pos;
          if (string_[pos] == '9')
            result[pos] = '0';
          else if (string_[pos] != '.') {
            ++result[pos];
            carry = false;
          }
        }
        if (carry)
          return U"1" + result;

        return result;
      }

      return string_ + std::u32string(pos - string_.length(), '0');
    }

    std::wstring toWide() const { return convertToWide(string_); }
    std::string toUtf8() const { return convertToUtf8(string_); }