Special variables: Difference between revisions
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Thundergnat (talk | contribs) (Rename Perl 6 -> Raku, alphabetize, minor clean-up) |
SqrtNegInf (talk | contribs) m (→{{header|Raku}}: Fix link: Perl 6 --> Raku (but stale, needs more work)) |
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(formerly Perl 6) |
(formerly Perl 6) |
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It is probably useful to briefly explain normal variables in |
It is probably useful to briefly explain normal variables in Raku before tackling special variables. |
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Variables in |
Variables in Raku have a prefix sigil to distinguish them from named subroutines, functions, classes, and so on. There is a system of sigils to mark the fundamental structural type of the variable: |
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<lang perl6> $foo scalar (object) |
<lang perl6> $foo scalar (object) |
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@foo ordered array |
@foo ordered array |
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Special Variables: |
Special Variables: |
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Raku has deprecated most of the "line-noise" variables from Perl 5 in favor of named variables. |
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<lang perl6> $_ # The implicit variable lexically scoped to the current block |
<lang perl6> $_ # The implicit variable lexically scoped to the current block |
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$*OUT # Standard output handle |
$*OUT # Standard output handle |
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$?PACKAGE # current package |
$?PACKAGE # current package |
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$ |
$*RAKU # Raku version running under |
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$*PERL # perl version running under |
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$*PID # system process id |
$*PID # system process id |
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%=POD # POD |
%=POD # POD |
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$*PROGRAM_NAME # name of the |
$*PROGRAM_NAME # name of the Raku program being executed |
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%*PROTOCOLS # Stores the methods needed for the uri() function |
%*PROTOCOLS # Stores the methods needed for the uri() function |
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::?ROLE # current role (as package or type name) |
::?ROLE # current role (as package or type name) |
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