sub cls returns Void {
system(($?OS eq any<MSWin32 mingw cygwin>) ?? 'cls' :: 'clear');
}
- Returns nothing.
- Checks the magical lexical (S02)
$?OS against
a junction consisting of 3 values.
-
The angle bracket syntax is a shorthand for
qw(space sep
wds) in Perl 5 and q:w/space
sep words/ in Perl 6. See S02 for more details
- The ternary operator
?? ::
decides what system command to use to clear the screen.