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.\" ========================================================================
.\"
.IX Title "Specific 3pm"
.TH Specific 3pm "2020-11-09" "perl v5.32.0" "User Contributed Perl Documentation"
.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
.\" way too many mistakes in technical documents.
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.SH "NAME"
Coro::Specific \- manage coroutine\-specific variables.
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
.Vb 1
\& use Coro::Specific;
\&
\& my $ref = new Coro::Specific;
\&
\& $$ref = 5;
\& print $$ref;
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.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
This module can be used to create variables (or better: references to
them) that are specific to the currently executing coroutine. This module
does not automatically load the Coro module (so the overhead will be small
when no coroutines are used).
.PP
A much faster method is to store extra keys into \f(CW%$Coro::current\fR
\&\- all you have to do is to make sure that the key is unique (e.g. by
prefixing it with your module name). You can even store data there before
loading the Coro module \- when Coro is loaded, the keys stored in
\&\f(CW%$Coro::current\fR are automatically attached to the coro thread executing
the main program.
.PP
You don't have to load \f(CW\*(C`Coro::Specific\*(C'\fR manually, it will be loaded
automatically when you \f(CW\*(C`use Coro\*(C'\fR and call the \f(CW\*(C`new\*(C'\fR constructor.
.IP "new" 4
.IX Item "new"
Create a new coroutine-specific scalar and return a reference to it. The
scalar is guaranteed to be \*(L"undef\*(R". Once such a scalar has been allocated
you cannot deallocate it (yet), so allocate only when you must.
.SH "BUGS"
.IX Header "BUGS"
The actual coroutine specific values do not automatically get destroyed
when the Coro::Specific object gets destroyed.
.SH "AUTHOR/SUPPORT/CONTACT"
.IX Header "AUTHOR/SUPPORT/CONTACT"
.Vb 2
\&   Marc A. Lehmann <schmorp@schmorp.de>
\&   http://software.schmorp.de/pkg/Coro.html
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