std::filesystem::operator/(std::filesystem::path)
From cppreference.com
< cpp | filesystem | path
friend path operator/( const path& lhs, const path& rhs ); |
(since C++17) | |
Concatenates two path components using the preferred directory separator if appropriate (see operator/= for details).
Effectively returns path(lhs) /= rhs.
This function is not visible to ordinary unqualified or qualified lookup, and can only be found by argument-dependent lookup when std::filesystem::path is an associated class of the arguments. This prevents undesirable conversions in the presence of a using namespace std::filesystem; using-directive.
Contents |
[edit] Parameters
lhs, rhs | - | paths to concatenate |
[edit] Return value
The result of path concatenation.
[edit] Example
Run this code
#include <filesystem> #include <iostream> int main() { # if defined(_WIN32) // see e.g. stackoverflow.com/questions/142508 std::filesystem::path p = "C:"; std::cout << "\"C:\" / \"Users\" / \"batman\" == " << p / "Users" / "batman" << '\n'; # else // __linux__ etc std::filesystem::path p = "/home"; std::cout << "\"/home\" / \"tux\" / \".fonts\" == " << p / "tux" / ".fonts" << '\n'; # endif }
Possible output:
Windows specific output: "C:" / "Users" / "batman" == "C:Users\\batman" Linux etc specific output: "/home" / "tux" / ".fonts" == "/home/tux/.fonts"
[edit] Defect reports
The following behavior-changing defect reports were applied retroactively to previously published C++ standards.
DR | Applied to | Behavior as published | Correct behavior |
---|---|---|---|
LWG 3065 | C++17 | allowed concatenating everything convertible to path in the presence of a using-directive
|
made hidden friend |
[edit] See also
appends elements to the path with a directory separator (public member function) |