TOC Index
Path to special I/O device
class IO::Special does IO { }
Used as a $.path attribute in filehandles for special standard input $*IN and output $*OUT and $*ERR. Provides a bridged interface of IO::Handle, mostly file tests and stringification.
method new(:$!what!)
Takes a single required attribute what. It is unlikely that you will ever need to construct one of these objects yourself.
say $*IN.path.what; # OUTPUT: «<STDIN>»say $*OUT.path.what; # OUTPUT: «<STDOUT>»say $*ERR.path.what; # OUTPUT: «<STDERR>»
Returns one of the strings '<STDIN>', '<STDOUT>', or '<STDERR>', specifying the type of the special IO device.
method WHICH(IO::Special:D: --> Str)
This returns a string that identifies the object. The string is composed by the type of the instance (IO::Special) and the what attribute:
$*IN.path.what; # OUTPUT: «<STDIN>»$*IN.path.WHICH; # OUTPUT: «IO::Special<STDIN>»
method Str(IO::Special:D:)
This returns '<STDIN>', '<STDOUT>', or '<STDERR>' as appropriate.
method IO(IO::Special:D: --> IO::Special)
Returns the invocant.
say $*IN.path.IO.what; # OUTPUT: «<STDIN>»say $*IN.path.what; # OUTPUT: «<STDIN>»
method e(IO::Special:D: --> True)
The 'exists' file test operator, always returns True.
method d(IO::Special:D: --> False)
The 'directory' file test operator, always returns False.
method f(IO::Special:D: --> False)
The 'file' file test operator, always returns False.
method s(IO::Special:D: --> 0)
The 'size' file test operator, always returns 0.
method l(IO::Special:D: --> False)
The 'symbolic links' file test operator, always returns False.
method r(IO::Special:D: --> Bool)
The 'read access' file test operator, returns True if and only if this instance represents the standard input handle(<STDIN>).
method w(IO::Special:D: --> Bool)
The 'write access' file test operator, returns True only if this instance represents either the standard output (<STOUT>) or the standard error (<STDERR>) handle.
method x(IO::Special:D: --> False)
The 'execute access' file test operator, always returns False.
method modified(IO::Special:D: --> Instant)
The last modified time for the filehandle. It always returns an Instant type object.
method accessed(IO::Special:D: --> Instant)
The last accessed time for the filehandle. It always returns an Instant type object.
method changed(IO::Special:D: --> Instant)
The last changed time for the filehandle. It always returns an Instant type object.
method mode(IO::Special:D: --> Nil)
The mode for the filehandle, it always returns Nil