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.IX Title "Parallel::Pipes::App 3pm"
.TH Parallel::Pipes::App 3pm 2026-06-18 "perl v5.42.2" "User Contributed Perl Documentation"
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.SH NAME
Parallel::Pipes::App \- friendly interface for Parallel::Pipes
.SH SYNOPSIS
.IX Header "SYNOPSIS"
.Vb 1
\&  use Parallel::Pipes::App;
\&
\&  my @result = Parallel::Pipes::App\->map(
\&    num => 3,
\&    work => sub ($task) { $task * 2 },
\&    tasks => [1, 2, 3, 4, 5],
\&  );
\&  # @result is ( 2, 4, 6, 8, 10 )
.Ve
.SH DESCRIPTION
.IX Header "DESCRIPTION"
Parallel::Pipes::App provides friendly interfaces for Parallel::Pipes.
.SH METHODS
.IX Header "METHODS"
Parallel::Pipes::App provides 2 class method:
.SS map
.IX Subsection "map"
.Vb 5
\&  my @result = Parallel::Pipes::App\->map(
\&    num => $num,
\&    work => $work,
\&    tasks => \e@task,
\&  );
.Ve
.PP
Process \f(CW@task\fR by \f(CW$work\fR in \f(CW$num\fR pre\-forked child processes, and get \f(CW@result\fR.
This is almost the same as
.PP
.Vb 1
\&  my @result = map { $work\->($_) } @task;
.Ve
.PP
except that \f(CW$work\fR is executed in a child process, not in the current process.
.SS run
.IX Subsection "run"
.Vb 7
\&  Parallel::Pipes::App\->run(
\&    num => $num,
\&    work => $work,
\&    tasks => \e@task,
\&    before_work => $before_work,
\&    after_work => $after_work,
\&  );
.Ve
.PP
\&\f(CW\*(C`run\*(C'\fR is a more generic form of \f(CW\*(C`map\*(C'\fR. In fact, we can write \f(CW\*(C`map\*(C'\fR by using \f(CW\*(C`run\*(C'\fR:
.PP
.Vb 8
\&  my @result;
\&  Parallel::Pipes::App\->run(
\&    num => $num,
\&    work => $work,
\&    tasks => \e@task,
\&    before_work => sub (@) {},
\&    after_work => sub ($item) { push @result, $item },
\&  );
.Ve
.SH "COPYRIGHT AND LICENSE"
.IX Header "COPYRIGHT AND LICENSE"
Copyright 2016 Shoichi Kaji <skaji@cpan.org>
.PP
This library is free software; you can redistribute it and/or modify
it under the same terms as Perl itself.