std::experimental::filesystem::path:: path

1) Constructs an empty path.

2) Copy constructor. Constructs a copy of p .

3) Move constructor. Constructs a copy of p , p is left in valid but unspecified state.

4,5) Constructs the path from a character sequence provided by source (4) , which is a pointer or an input iterator to a null-terminated character/wide character sequence or an std::basic_string , or represented as a pair of input iterators [ first , last ) (5) . Any of the four character types char , char16_t , char32_t , wchar_t is allowed, and the method of conversion to the native character set depends on the character type used by source .

• If the source character type is char , the encoding of the source is assumed to be the native narrow encoding (so no conversion takes place on POSIX systems).
• If the source character type is char16_t , conversion from UTF-16 to native filesystem encoding is used.
• If the source character type is char32_t , conversion from UTF-32 to native filesystem encoding is used.
• If the source character type is wchar_t , the input is assumed to be the native wide encoding (so no conversion takes places on Windows).

6,7) Constructs the path from a character sequence provided by source (6) , which is a pointer or an input iterator to a null-terminated character sequence or an std::string , or represented as a pair of input iterators [ first , last ) (7) . The only character type allowed is char . Uses loc to perform the character encoding conversion. If value_type is wchar_t , converts from to wide using the std:: codecvt < wchar_t , char , std:: mbstate_t > facet of loc . Otherwise, first converts to wide using the std:: codecvt < wchar_t , char , std:: mbstate_t > facet and then converts to filesystem native character type using std:: codecvt < wchar_t , value_type > facet of loc .

1,2) (none)

3)

4-7) (none)

#include <experimental/filesystem>
#include <iostream>
namespace fs = std::experimental::filesystem;
 
int main()
{
    fs::path p1 = "/usr/lib/sendmail.cf"; // portable format
    fs::path p2 = "C:\\users\\abcdef\\AppData\\Local\\Temp\\"; // native format
    fs::path p3 = L"D:/猫.txt"; // wide string
 
    std::cout << "p1 = " << p1 << '\n'
              << "p2 = " << p2 << '\n'
              << "p3 = " << p3 << '\n';
}

p1 = "/usr/lib/sendmail.cf"
p2 = "C:\users\abcdef\AppData\Local\Temp\"
p3 = "D:/猫.txt"