Re: iterate over a directory, dealing with permission errors

[Adrian Matoga via Digitalmars-d]

On Friday, 18 September 2015 at 11:35:45 UTC, John Colvin wrote:
Posting here instead of learn because I think it uncovers a 
design flaw

void main(string[] args)
{
    import std.file : dirEntries, SpanMode;
    import std.stdio : writeln;
    foreach(file; dirEntries(args[1], SpanMode.depth))
        writeln(file.name);
}

Modify this program such that it will print "<file.name> access 
denied" instead of crashing with an exception whenever it hits 
a permissions problem. Remember that you might not even have 
permission to read the directory given in args[1]. Remember 
that access permissions can change at any time.

It can be done, but it is seriously ugly.

https://github.com/D-Programming-Language/phobos/pull/931

I had to move to some urgent stuff instead of improving the PR 
and later I forgot about it. The discussion points out what not 
to do when solving this issue. :)