basic_random_access_file::basic_random_access

basic_random_access_file(
    const executor_type & ex,
    const char * path,
    file_base::flags open_flags);

This constructor initialises and opens a file.

ex: The I/O executor that the file will use, by default, to dispatch handlers for any asynchronous operations performed on the file.
path: The path name identifying the file to be opened.
open_flags: A set of flags that determine how the file should be opened.