tweak Antiquated Perl copyright to 'same as perl'.

[catagits/Web-Simple.git] / lib / Web / Simple / AntiquatedPerl.pod

=head1 NAME

Web::Simple::AntiquatedPerl - the slides from the talk

=head1 WHAT?

Web::Simple was originally introduced in a talk at the Italian Perl Workshop,
entitled Antiquated Perl.

The video is available on the Shadowcat site: <http://www.shadowcat.co.uk/archive/conference-video/ipw-2009/antiquated>

If you don't particularly want to watch me confusing a bunch of Italian perl
mongers, the slides are reproduced below.

=head1 SLIDES

  Antiquated
  Perl
  ----
  Modern
  Perl?
  ----
  Post
  Modern
  Perl
  ----
  Enlightened
  Perl
  ----
  everybody
  knows
  ----
  Catalyst
  Moose
  DBIx::Class
  ----
  Modern
  Perl?
  ----
  perl5
  v10
  ----
    given ($x) {
      when (3) {
    ...
  ----
  ~~
  ----
  what's the
  opposite?
  ----
  Old
  Perl?
  ----
  if it 
  works
  ----
  Legacy
  Perl?
  ----
  not
  interesting
  ----
  Stupid
  Perl
  ----
  *$&^*(^
  FormMail.PL
  ----
  Antiquated
  Perl
  ----
  Antique
  ----
  Old *and*
  beautiful
  ----
  Simple
  Elegant
  ----
    $|++
  ----
    use IO::Handle;
    STDOUT->autoflush(1);
  ----
  it's core.
  it's fine.
  ----
  but why
  think?
  ----
    select((select(FOO),$|++)[0])
  ----
    (select(FOO),$|++)
    ->
    ($old_selected_fh,$|)
  ----
    (select(FOO),$|++)[0]
    ->
    $old_select_fh
  ----
    select((select(FOO),$|++)[0])
    ->
    use IO::Handle;
    FOO->autoflush(1)
  ----
  ~~
  ----
    ~~@x
  ----
    ~(~(@x))
  ----
  bitwise
  negation
  ----
  so ...
  ----
    ~@x
    ->
    ~(scalar @x)
  ----
    ~~$number
    ->
    $number
  ----
    ~~@x
    ->
    scalar @x
  ----
    perl -MMoose -e'print ~~keys %INC'
    84
  ----
  overload::constant
  ----
  lets you
  affect
  parsing
  ----
  numbers
  strings
  ----
  q qq qr
  t s qw
  ----
  i18n.pm
  ----
  ~~"$foo bar"
  loc("_[0] bar", $foo)
  ----
  for
  ----
    for ($foo) {
      /bar/ and ...
  ----
    for ($foo) {
      /bar/ and return do {
        <code here>
      }
  ----
    /foo/gc
  ----
    /\Gbar/gc
  ----
    sub parse {
      my ($self, $str) = @_;
      for ($str) {
        /match1/gc and return
          $self->_subparse_1($_)
  ----
    sub _subparse_1 {
      my ($self) = @_;
      for ($_[1]) {
        /\Gsubmatch1/gc ...
  ----
  prototypes
  ----
    sub foo (&) {
  ----
    foo {
      ...
    };
  ----
    prototype \&foo
  ----
  typeglobs
  ----
    *{"${package}::${name}"}
      = sub { ... }
  ---- 
    local
  ----
    local $_
  ----
    local *Carp::croak
      = \&Carp::confess;
  ----
    do {
      local (@ARGV, $/) = $file;
      <>
    }
  ----
  strict
  and
  warnings
  ----
    strict->import
  ----
  affects
  compilation
  scope
  ----
    sub strict_and_warnings::import {
      strict->import;
      warnings->import;
    }
  ----
    use strict_and_warnings;
  ----
  $^H
  %^H
  ----
    $^H |= 0x120000;
    $^H{'foo'}
      = bless($foo, 'My::Foo');
  ----
    sub My::Foo::DESTROY {
  ----
    delete ${$package}{myimport}
  ----
  B::Hooks::EndOfScope
  ----
  tie
  ----
    tie $var, 'Foo';
  ----
    sub FETCH
    sub STORE
  ----
  Scalar
  Array
  Hash
  Handle
  ----
  now ...
  ----
  mst: destruction
  testing technology
  since March 1983
  ----
  3 days
  old
  ----
  2 weeks
  early
  ----
  incubator
  ----
  glass box
  plastic tray
  heater
  ----
  design
  flaw
  ----
  BANG
  ----
  so ...
  ----
  interesting
  fact
  ----
  prototypes
  only warn
  when parsed
  ----
  error when
  compiled
  ----
  so ...
  ----
    dispatch [
      sub (GET + /) { ... },
      sub (GET + /user/*) { ... }
    ];
  ----
    foreach my $sub (@$dispatch) {
      my $proto = prototype $sub;
      $parser->parse($proto);
      ...
  ----
    PARSE: { do {
      push @match, $self->_parse_spec_section($spec)
        or $self->_blam("Unable to work out what the next section is");
      last PARSE if (pos == length);
      /\G\+/gc or $self->_blam('Spec sections must be separated by +');
    } until (pos == length) };
  ----
    sub _blam {
      my ($self, $error) = @_;
      my $hat = (' ' x pos).'^';
      die "Error parsing dispatch specification: ${error}\n
    ${_}
    ${hat} here\n";
    }
  ----
    Error parsing ...
    GET+/foo
       ^ here
  ----
    sub (GET + /user/*) {
     my ($self, $user) = @_;
  ----
  I hate
  fetching
  $self
  ----
    *{"${app}::self"}
      = \${"${app}::self"};
  ----
  use vars
  ----
    sub _run_with_self {
      my ($self, $run, @args) = @_;
      my $class = ref($self);
      no strict 'refs';
      local *{"${class}::self"} = \$self;
      $self->$run(@args);
    }
  ----
  HTML
  output
  ----
  templates
  ----
  HTML is
  NOT TEXT
  ----
    <div>,
      $text,
    </div>;
  ----
  <div>
  ----
  <$fh>
  ----
    tie *{"${app}::${name}"},
      'XML::Tags::TIEHANDLE',
      "<${name}>";
  ----
    sub TIEHANDLE { my $str = $_[1]; bless \$str, $_[0] }
    sub READLINE { ${$_[0]} }
  ----
    sub DESTROY {
      my ($into, @names) = @$_[0];
      no strict 'refs';
      delete ${$into}{$_}
        for @names;
    }
  ----
  </div>
  ----
  glob('/div');
  ----
    *CORE::GLOBAL::glob
      = sub { ... };
  ----
    delete
      ${CORE::GLOBAL::}{glob};
  ----
    sub foo {
      use XML::Tags qw(div);
      <div>, "foo!", </div>;
    }
  ----
  what about
  interpolation
  ----
    my $stuff = 'foo"bar';
    <a href="$stuff">
  ----
  hmm ...
  ----
  overload::constant!
  ----
    glob('a href="'.$stuff.'"');
  ----
    glob(
      bless(\'a href="', 'MagicTag')
      .$stuff
      .bless(\'"', 'MagicTag')
    )
  ----
    use overload
      '.' => 'concat';
  
    sub concat {
  ----
  hooking
  it up
  ----
    sub (.html) {
      filter_response {
        $self->render_html($_[1])
      }
    }
  ----
    bless(
      $_[1],
      'Web::Simple::ResponseFilter'
    );
  ----
    if ($self->_is_response_filter($result)) {
      return $self->_run_with_self(
        $result,
        $self->_run_dispatch_for($new_env, \@disp)
      );
    }
  ----
  and the result?
  ----
   goto &demo;
  ----
  questions?
  ----
  thank
  you

=head1 AUTHOR

Matt S. Trout <mst@shadowcat.co.uk>

=head1 COPYRIGHT

Copyright (c) 2010 Matt S. Trout <mst@shadowcat.co.uk>

=head1 LICENSE

This text is free documentation under the same license as perl itself.

=cut