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=title Twigils and special variables
Perl 6 has a large set of special variables. In order to
make it easy to differentiate them from regular variables,
they are marked with a second prefix called twigil.
Regular, user defined variables have a sigil ($, @ or %) in front of them.
System variables have and additional character between the sigil
and the name of the variable.
$*PROGRAM-NAME relative path to the currently running Perl 6 script.
$*PROGRAM full path to the currently running Perl 6 cript
$*CWD contains a path to the current working directory.
$*IN is the standard input (STDIN). You can read a line using $*IN.get
@*INC search path for modules.
$*PID Process ID
$EXECUTABLE_NAME Relative path to the current binary. Most likely perl6
$EXECUTABLE Full path to perl6
You can read more about them in
Perl 6 Tricks and Treats
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Published on 2012-01-01
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