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.