Re: [boost] Re: [filesystem] status() if neither file nor directory?

From: Peter Dimov (pdimov_at_[hidden])
Date: 2005-05-08 15:37:30

Beman Dawes wrote:
> "Peter Dimov" <pdimov_at_[hidden]> wrote in message
> news:012701c553ea$c2707610$6401a8c0_at_pdimov2...
>> It seems to me that the correct definition of exists() in terms of
>> status() is just !(status() & not_found_flag).
>
> The expectation with not_found_flag is that, assuming the branch() if
> any is found, it should be possible to create a file or directory
> with that path. Consider:
>
>   if (!exists("foo"))
>      create_directory("foo");  // surprise! This may fail: "exists
> but not a directory"

!exists("foo") == !!(status("foo") & not_found_flag) == status("foo") & 
not_found_flag

if( status("foo") & not_found_flag )
{
    create_directory( "foo" );
}

I don't see your point, but I may be missing something.