perl6/doc/lib/IO
doc src
(title) class IO
class IO::Path is Cool does IO::FileTestable { }
Methods
(head2) dir
sub dir Cool $path = '.', Mu :$test = none('.', '..')
Returns a list of L<IO::File> and L<IO::Dir> objects for the
files and directories found in the $path. If $path is not given
assumes the current directory.
A second optional parameter can be given that will be
matched against the strings to filter out certain entries.
By default it filters out the '.' and '..' entries.
Examples:
for dir() -> $file {
say $file;
}
dir('path/to/directory');
To include all the entries (including . and ..) write:
dir(test => all())
To include only entries with a .pl extension write:
dir(test => /.pl$/)
(head2) prompt
Prints out a string to the standard output and waits
for the user to type in something and finish with an ENTER.
Returns the string typed in without the trailing newline.
my $name = prompt("Hi, what's your name?");
(head2) File Test operators
-e
-f Do not exist in Perl 6. See :e, :f.
-M Does not exist in Perl 6. See C<modified>.
-A Does not exist in Perl 6. See C<accessed>.
-C Does not exist in Perl 6. See C<changed>.
:e Exists
:d Directory
:f File
:l Symbolic link
:r Readable
:w Writable
:x Executable
:s Size
:z Zero size
Usage:
If you have a string - a path to something in the filesystem:
if "path/to/file".IO ~~ :e {
say 'file exists';
}
my $file = "path/to/file";
if $file.IO ~~ :e {
say 'file exists';
}
If you already have an IO object in $file, either by creating one yourself,
or by getting it from another subroutine, such as dir ,
you can write this:
my $file = "path/to/file".IO;
if $file ~~ :e {
say 'file exists';
}
There are also 3 methods for fetching the 3 timestamps of a file (inode),
on Operating Systems where these are available:
(head2) modified
Timestamp when the file was last modified.
"path/to/file".IO.modified()
(head2) accessed
Timestamp when the file was last accessed.
"path/to/file".IO.accessed()
(head2) changed
Timestamp when the inode was last changed.
"path/to/file".IO.changed()
