iterate over a directory, dealing with permission errors

[Adrian Matoga via Digitalmars-d]

On Friday, 18 September 2015 at 11:54:32 UTC, Robert burner 
Schadek wrote:
> http://dlang.org/phobos/std_exception.html#.handle
>
> foreach(file; dirEntries(args[1], SpanMode.depth)
>         .handle!(Exception, RangePrimitive.front, (e, r) => 
> DirEntry())) {
>     writeln(file.name);
> }
>
> change Exception to the Exception Type to handle and select the 
> throwing range primitive (RangePrimitive). Then just supply a 
> delegate that does the actual handling.
> This will not break any range chain!

Cool, I wish I had this idea back in 2012.