scoped_file class that deletes file at end of scope

[Marcus Lindblom <macke@…>]

I've found myself wanting this on a couple of occasions with 1.33.1, and I've done it with boost::shared_ptr:

boost::shared_ptr<fs::path> removeFile(&file, bind(&fs::remove, boost::cref(file)));

That didn't work with 1.34.1 (maybe due to compiler intricacies), so I did it properly:

class scoped_file {
public:
    explicit scoped_file(const std::string& file) : m_path(file, boost::filesystem::native) {}
    explicit scoped_file(const boost::filesystem::path& file) : m_path(file) {}

    ~scoped_file() { boost::filesystem::remove(m_path); }

private:
    boost::filesystem::path m_path;
};

That might be something to add?

[Marcus Lindblom <macke@…>]

Sorry! The shared_ptr impl should look like this:

boost::shared_ptr<fs::path> removeFile(&file, bind(&fs::remove, boost::cref(file)));

[Beman Dawes]

I'm considering #590 and #1090 as indications of interest and need, but feel that there are various details to be worked out first. mkstemp and similar functions seem pretty dated. The C++ approach suggested by #1090 is appealing, but more work needs to be done. Suggestions welcome.

--Beman

[Marcus Lindblom <macke@…>]

What is lacking in the current proposal?

(Also, the c++ markup in the description seems to have failed. Could you edit that?)