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Showing content from https://timsong-cpp.github.io/cppwp/n4659/fs.op.temp_dir_path below:

[fs.op.temp_dir_path]

30 Input/output library [input.output] 30.10 File systems [filesystems] 30.10.34 Filesystem operation functions [fs.op.funcs] 30.10.34.38 Temporary directory path [fs.op.temp_dir_path]

path temp_directory_path(); path temp_directory_path(error_code& ec);

Returns: An unspecifed directory path suitable for temporary files. An error shall be reported if !exists(p) || !is_­directory(p), where p is the path to be returned. The signature with argument ec returns path() if an error occurs.

[Example: For POSIX-based operating systems, an implementation might return the path supplied by the first environment variable found in the list TMPDIR, TMP, TEMP, TEMPDIR, or if none of these are found, "/tmp".

For Windows-based operating systems, an implementation might return the path reported by the Windows GetTempPath API function. end example]


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