Adding upstream version 4.22.0.upstream/4.22.0

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 139 insertions, 0 deletions

diff --git a/upstream/mageia-cauldron/man3pm/Tie::Scalar.3pm b/upstream/mageia-cauldron/man3pm/Tie::Scalar.3pm
new file mode 100644
index 00000000..bf5f5bc1
--- /dev/null
+++ b/upstream/mageia-cauldron/man3pm/Tie::Scalar.3pm
@@ -0,0 +1,139 @@
+.\" -*- mode: troff; coding: utf-8 -*-
+.\" Automatically generated by Pod::Man 5.01 (Pod::Simple 3.43)
+.\"
+.\" Standard preamble:
+.\" ========================================================================
+.de Sp \" Vertical space (when we can't use .PP)
+.if t .sp .5v
+.if n .sp
+..
+.de Vb \" Begin verbatim text
+.ft CW
+.nf
+.ne \\$1
+..
+.de Ve \" End verbatim text
+.ft R
+.fi
+..
+.\" \*(C` and \*(C' are quotes in nroff, nothing in troff, for use with C<>.
+.ie n \{\
+.    ds C` ""
+.    ds C' ""
+'br\}
+.el\{\
+.    ds C`
+.    ds C'
+'br\}
+.\"
+.\" Escape single quotes in literal strings from groff's Unicode transform.
+.ie \n(.g .ds Aq \(aq
+.el       .ds Aq '
+.\"
+.\" If the F register is >0, we'll generate index entries on stderr for
+.\" titles (.TH), headers (.SH), subsections (.SS), items (.Ip), and index
+.\" entries marked with X<> in POD.  Of course, you'll have to process the
+.\" output yourself in some meaningful fashion.
+.\"
+.\" Avoid warning from groff about undefined register 'F'.
+.de IX
+..
+.nr rF 0
+.if \n(.g .if rF .nr rF 1
+.if (\n(rF:(\n(.g==0)) \{\
+.    if \nF \{\
+.        de IX
+.        tm Index:\\$1\t\\n%\t"\\$2"
+..
+.        if !\nF==2 \{\
+.            nr % 0
+.            nr F 2
+.        \}
+.    \}
+.\}
+.rr rF
+.\" ========================================================================
+.\"
+.IX Title "Tie::Scalar 3pm"
+.TH Tie::Scalar 3pm 2023-11-28 "perl v5.38.2" "Perl Programmers Reference Guide"
+.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
+.\" way too many mistakes in technical documents.
+.if n .ad l
+.nh
+.SH NAME
+Tie::Scalar, Tie::StdScalar \- base class definitions for tied scalars
+.SH SYNOPSIS
+.IX Header "SYNOPSIS"
+.Vb 2
+\&    package NewScalar;
+\&    require Tie::Scalar;
+\&
+\&    @ISA = qw(Tie::Scalar);
+\&
+\&    sub FETCH { ... }           # Provide a needed method
+\&    sub TIESCALAR { ... }       # Overrides inherited method
+\&
+\&
+\&    package NewStdScalar;
+\&    require Tie::Scalar;
+\&
+\&    @ISA = qw(Tie::StdScalar);
+\&
+\&    # All methods provided by default, so define
+\&    # only what needs be overridden
+\&    sub FETCH { ... }
+\&
+\&
+\&    package main;
+\&
+\&    tie $new_scalar, \*(AqNewScalar\*(Aq;
+\&    tie $new_std_scalar, \*(AqNewStdScalar\*(Aq;
+.Ve
+.SH DESCRIPTION
+.IX Header "DESCRIPTION"
+This module provides some skeletal methods for scalar-tying classes. See
+perltie for a list of the functions required in tying a scalar to a
+package. The basic \fBTie::Scalar\fR package provides a \f(CW\*(C`new\*(C'\fR method, as well
+as methods \f(CW\*(C`TIESCALAR\*(C'\fR, \f(CW\*(C`FETCH\*(C'\fR and \f(CW\*(C`STORE\*(C'\fR. The \fBTie::StdScalar\fR
+package provides all the methods specified in  perltie. It inherits from
+\&\fBTie::Scalar\fR and causes scalars tied to it to behave exactly like the
+built-in scalars, allowing for selective overloading of methods. The \f(CW\*(C`new\*(C'\fR
+method is provided as a means of legacy support for classes that forget to
+provide their own \f(CW\*(C`TIESCALAR\*(C'\fR method.
+.PP
+For developers wishing to write their own tied-scalar classes, the methods
+are summarized below. The perltie section not only documents these, but
+has sample code as well:
+.IP "TIESCALAR classname, LIST" 4
+.IX Item "TIESCALAR classname, LIST"
+The method invoked by the command \f(CW\*(C`tie $scalar, classname\*(C'\fR. Associates a new
+scalar instance with the specified class. \f(CW\*(C`LIST\*(C'\fR would represent additional
+arguments (along the lines of AnyDBM_File and compatriots) needed to
+complete the association.
+.IP "FETCH this" 4
+.IX Item "FETCH this"
+Retrieve the value of the tied scalar referenced by \fIthis\fR.
+.IP "STORE this, value" 4
+.IX Item "STORE this, value"
+Store data \fIvalue\fR in the tied scalar referenced by \fIthis\fR.
+.IP "DESTROY this" 4
+.IX Item "DESTROY this"
+Free the storage associated with the tied scalar referenced by \fIthis\fR.
+This is rarely needed, as Perl manages its memory quite well. But the
+option exists, should a class wish to perform specific actions upon the
+destruction of an instance.
+.SS "Tie::Scalar vs Tie::StdScalar"
+.IX Subsection "Tie::Scalar vs Tie::StdScalar"
+\&\f(CW\*(C`Tie::Scalar\*(C'\fR provides all the necessary methods, but one should realize
+they do not do anything useful. Calling \f(CW\*(C`Tie::Scalar::FETCH\*(C'\fR or 
+\&\f(CW\*(C`Tie::Scalar::STORE\*(C'\fR results in a (trappable) croak. And if you inherit
+from \f(CW\*(C`Tie::Scalar\*(C'\fR, you \fImust\fR provide either a \f(CW\*(C`new\*(C'\fR or a
+\&\f(CW\*(C`TIESCALAR\*(C'\fR method.
+.PP
+If you are looking for a class that does everything for you that you don't
+define yourself, use the \f(CW\*(C`Tie::StdScalar\*(C'\fR class, not the
+\&\f(CW\*(C`Tie::Scalar\*(C'\fR one.
+.SH "MORE INFORMATION"
+.IX Header "MORE INFORMATION"
+The perltie section uses a good example of tying scalars by associating
+process IDs with priority.