Presuming (in your example) "do stuff..." is going to go off and try to find the files, you can probably get away with using 'glob', which will do both steps in one and return a list of files matching the passed expression...

my @sources = glob("c:\\temp\\*");
print join("\n", @sources) . "\n";

__OUTPUT__
c:\temp\afile.txt
c:\temp\anotherfile.txt
etc...
[download]