std::experi...ectory_path(3)

πŸ“¦ version 2024.07.05, in nixpkgs unstable, opensuse-leap 16.0

πŸ’… std::experi...ectory_path(3) πŸ’…

okay bestie, welcome to the C++ Standard Libary manual page for std::experi...ectory_path(3) β€” yes the title is literally truncated like that, and we are respectfully not fixing it πŸ’–. This whole page is about std::experimental::filesystem::temp_directory_path, and its entire job is handing you a directory that's suitable for temporary files. Let's go πŸ¦‹.

✨ NAME ✨

std::experimental::filesystem::temp_directory_path - std::experimental::filesystem::temp_directory_path

🌸 Synopsis 🌸

Defined in header <experimental/filesystem>:

path temp_directory_path();                 (1) (filesystem TS)
path temp_directory_path( error_code& ec );

Returns the directory location suitable for temporary files.

πŸŽ€ Parameters πŸŽ€

(none) β€” literally none, bestie. Nothing to pass here.

πŸ’– Return value πŸ’–

A directory suitable for temporary files. The path is guaranteed to exist and to be a directory. The overload that takes error_code& argument returns an empty path on error.

😭 Exceptions 😭

The overload that does not take an error_code& parameter throws filesystem_error on underlying OS API errors, constructed with path to be returned as the first argument and the OS error code as the error code argument. std::bad_alloc may be thrown if memory allocation fails.

The overload taking an error_code& parameter sets it to the OS API error code if an OS API call fails, and executes ec.clear() if no errors occur. This overload has noexcept specification: noexcept.

πŸ“ Notes πŸ“

On POSIX systems, the path may be the one specified in the environment variables TMPDIR, TMP, TEMP, TEMPDIR, and, if none of them are specified, the path "/tmp" is returned. 🌈

On Windows systems, the path is typically the one returned by GetTempPath. πŸͺŸ

🌈 Example 🌈

// Run this code

        #include <experimental/filesystem>
        #include <iostream>
        namespace fs = std::experimental::filesystem;

        int main()
        {
            std::cout << "Temp directory is " << fs::temp_directory_path() <<
       '\n';
        }

Possible output:

        Temp directory is "C:\Windows\TEMP\"

πŸ‘‘ See also πŸ‘‘

  • tmpfile creates and opens a temporary, auto-removing file (function)

🏷️ Categories 🏷️

  • Noindexed pages
  • unconditionally noexcept

πŸ™ˆ Hidden categories πŸ™ˆ

  • Pages with unreviewed unconditional noexcept template
  • Pages with unreviewed noexcept template

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