Re: [Boost-users] FileSystem - Test if file exists without opening thefile?

From: Johan Nilsson (r.johan.nilsson_at_[hidden])
Date: 2007-04-26 09:33:47

Jeff wrote:
> Hello,
> 
> I can see from a FileSystem example how to check for the existence of
> a directory.  What I would like to be able to do is to check for the
> existence of a file but I couldn't figure out how to do it using
> exists(). 
> 
> The way that I currently check for a file's existence is by opening
> the file. I wonder if boost::filesystem can test for a file's
> existence more efficiently than having to open it like I do in the
> snippet below. 
> 
> // checking for file existence by opening the file
> ifstream source(fileName);
> if (source)
>  ...

What about (Boost 1.34):

#include <boost/filesystem.hpp>

...

boost::filesystem::exists(fileName);

/ Johan