The dir method gives you entries in the directory you pass. If you don't
pass a test it'll use the default test which is none(".", ".."), i.e.
"anything except . and ..".
I'm not sure why using { .IO.d } as the test would not give you b,
though. Can you check what "a/b".IO.d outputs? Maybe that can give us a
clue.
HTH
- Timo
On 24/11/2018 22:18, Fernando Santagata wrote:
> Hello,
>
> I think that I don't understand how the 'test' argument of 'dir' works.
> I have a directory 'a', which contains a subdirectory 'b' and a file
> 'c'; I want to select only the subdirectories of 'a'.
>
> Using the REPL I tried to ask the content of the directory 'a':
>
> > my @dirs = dir('a')
> ["a/c".IO "a/b".IO]
> > my @dirs = dir('a', test => { .IO.d })
> ["a/.".IO "a/..".IO]
> Why omitting the test the code returns the right list, while adding
> the test it returns just '.' and '..'?
>
> If I do the same thing for the top level directory '.' the behavior is
> different:
>
> > my @dirs = dir('.', test => { .IO.d })
> [".".IO "a".IO "..".IO]
>
> Now I can see the directory 'a'.
> If I descend a level, doing a 'cd a', the behavior is consistent with
> what I see at the previous level.
> I'm confused.
>
> I'm using version 2018.10.
>
> --
> Fernando Santagata
