NAME
   Devel::REPL - a modern perl interactive shell

SYNOPSIS
     my $repl = Devel::REPL->new;
     $repl->load_plugin($_) for qw(History LexEnv);
     $repl->run

   Alternatively, use the 're.pl' script installed with the distribution

     system$ re.pl

DESCRIPTION
   This is an interactive shell for Perl, commonly known as a REPL - Read,
   Evaluate, Print, Loop. The shell provides for rapid development or
   testing of code without the need to create a temporary source code file.

   Through a plugin system, many features are available on demand. You can
   also tailor the environment through the use of profiles and run control
   files, for example to pre-load certain Perl modules when working on a
   particular project.

USAGE
   To start a shell, follow one of the examples in the "SYNOPSIS" above.

   Once running, the shell accepts and will attempt to execute any code
   given. If the code executes successfully you'll be shown the result,
   otherwise an error message will be returned. Here are a few examples:

    $_ print "Hello, world!\n"
    Hello, world!
    1
    $_ nosuchfunction
    Compile error: Bareword "nosuchfunction" not allowed while "strict subs" in use at (eval 130) line 5.

$_

   In the first example above you see the output of the command ("Hello,
   world!"), if any, and then the return value of the statement (1).
   Following that example, an error is returned when the execution of some
   code fails.

   Note that the lack of semicolon on the end is not a mistake - the code
   is run inside a Block structure (to protect the REPL in case the code
   blows up), which means a single statement doesn't require the semicolon.
   You can add one if you like, though.

   If you followed the first example in the "SYNOPSIS" above, you'll have
   the History and LexEnv plugins loaded (and there are many more
   available). Although the shell might support "up-arrow" history, the
   History plugin adds "bang" history to that so you can re-execute chosen
   commands (with e.g. "!53"). The LexEnv plugin ensures that lexical
   variables declared with the "my" keyword will automatically persist
   between statements executed in the REPL shell.

   When you "use" any Perl module, the "import()" will work as expected -
   the exported functions from that module are available for immediate use:

    $_ carp "I'm dieeeing!\n"
    String found where operator expected at (eval 129) line 5, near "carp "I'm dieeeing!\n""
            (Do you need to predeclare carp?)
    Compile error: syntax error at (eval 129) line 5, near "carp "I'm dieeeing!\n""
    BEGIN not safe after errors--compilation aborted at (eval 129) line 5.

$_ use Carp

$_ carp "I'm dieeeing!\n"
    I'm dieeeing!
     at /usr/share/perl5/Lexical/Persistence.pm line 327
    1
    $_

   To quit from the shell, hit "control+d" or "control+c".

 Run Control Files
   For particular projects you might well end up running the same commands
   each time the REPL shell starts up - loading Perl modules, setting
   configuration, and so on. A run control file lets you have this done
   automatically, and you can have multiple files for different projects.

   By default the "re.pl" program looks for "$HOME/.re.pl/repl.rc", and
   runs whatever code is in there as if you had entered it at the REPL
   shell yourself.

   To set a new run control file that's also in that directory, pass it as
   a filename like so:

    system$ re.pl --rcfile myproject.pc

   If the filename happens to contain a forwardslash, then it's used
   absolutely, or realive to the current working directory:

    system$ re.pl --rcfile /path/to/my/project/repl.rc

   Within the run control file you might want to load plugins. This is
   covered in "The REPL shell object" section, below.

 Profiles
   To allow for the sharing of run control files, you can fashion them into
   a Perl module for distribution (perhaps via the CPAN). For more
   information on this feature, please see the Devel::REPL::Profile manual
   page.

   A default profile ships with "Devel::REPL"; it loads the following
   plugins:

   *   Devel::REPL::Plugin::History

   *   Devel::REPL::Plugin::LexEnv

   *   Devel::REPL::Plugin::DDS

   *   Devel::REPL::Plugin::Packages

   *   Devel::REPL::Plugin::Commands

   *   Devel::REPL::Plugin::MultiLine::PPI

 Plugins
   Plugins are a way to add funcionality to the REPL shell, and take
   advantage of "Devel::REPL" being based on the Moose object system for
   Perl 5. This means it's simple to 'hook into' many steps of the R-E-P-L
   process. Plugins can change the way commands are interpreted, or the way
   their results are output, or even add commands to the shell environment.

   A number of plugins ship with "Devel::REPL", and more are available on
   the CPAN. Some of the shipped plugins are loaded in the default profile,
   mentioned above.

   Writing your own plugins is not difficult, and is discussed in the
   Devel::REPL::Plugin manual page, along with links to the manual pages of
   all the plugins shipped with "Devel::REPL".

 The REPL shell object
   From time to time you'll want to interact with or manipulate the
   "Devel::REPL" shell object itself; that is, the instance of the shell
   you're currently running.

   The object is always available through the $_REPL variable. One common
   requirement is to load an additional plugin, after your profile and run
   control files have already been executed:

    $_ $_REPL->load_plugin('Timing');
    1
    $_ print "Hello again, world!\n"
    Hello again, world!
    Took 0.00148296356201172 seconds.
    1
    $_

REQUIREMENTS
   In addition to the contents of the standard Perl distribution, you will
   need the following:

   *   Moose >= 0.64

   *   MooseX::Object::Pluggable >= 0.0009

   *   MooseX::Getopt >= 0.15

   *   MooseX::AttributeHelpers >= 0.14

   *   namespace::clean

   *   File::HomeDir

   *   Lexical::Persistence

   *   Data::Dump::Streamer

   *   PPI

   *   B::Keywords

   *   Task::Weaken

   *   App::Nopaste

AUTHOR
   Matt S Trout - mst (at) shadowcatsystems.co.uk
   (<http://www.shadowcatsystems.co.uk/>)

CONTRIBUTORS
   Stevan Little - stevan (at) iinteractive.com
   Alexis Sukrieh - sukria+perl (at) sukria.net
   epitaph
   mgrimes - mgrimes (at) cpan dot org
   Shawn M Moore - sartak (at) gmail.com
   Oliver Gorwits

LICENSE
   This library is free software under the same terms as perl itself

You are viewing proxied material from ftp.icm.edu.pl. The copyright of proxied material belongs to its original authors. Any comments or complaints in relation to proxied material should be directed to the original authors of the content concerned. Please see the disclaimer for more details.