X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=moose-class%2Fslides%2Findex.html;h=056d33b8459a696a7965458ae45ab880ecc14014;hb=a575fa9c8324958c05ae5a69a2d98aa907066ef8;hp=64228049fc1921c11c82f68fefdc2685093fde9f;hpb=84326b8a3635da8d4c825df6f2862f4e4c536fcc;p=gitmo%2Fmoose-presentations.git diff --git a/moose-class/slides/index.html b/moose-class/slides/index.html index 6422804..056d33b 100644 --- a/moose-class/slides/index.html +++ b/moose-class/slides/index.html @@ -52,7 +52,7 @@ img#me05 {top: 43px;left: 36px;}

Introduction to Moose

-

git://git.moose.perl.org/moose-presentations.git

+

Dave Rolsky

@@ -71,7 +71,8 @@ img#me05 {top: 43px;left: 36px;}
@@ -154,7 +155,7 @@ img#me05 {top: 43px;left: 36px;} 
package Person;
 use Moose;
 
-has first_name => ( is => 'rw' );
+has first_name => ( is => 'ro' ); @@ -218,7 +219,7 @@ use Moose; @@ -300,8 +301,8 @@ has blog_uri => ( handles => { 'blog_host' => 'host' }, ); -$person->blog_host; -# really calls $person->blog_uri->host +$person->blog_host; +# really calls $person->blog_uri->host
@@ -892,8 +893,8 @@ use Moose;

BUILDARGS

@@ -949,13 +950,13 @@ sub BUILD {

Object Construction a la Moose

- 
Person->new(@_)
+ 
Person->new(@args)
-
    -
  1. Calls Person->BUILDARGS(@_) to turn @_ into a hashref
    2. +
      +
    1. Calls Person->BUILDARGS(@args) to turn @args into a hashref
    2. Blesses a reference
    3. Populates attributes based on the hashref from #1
      4. -
    4. Calls $new_object->BUILDALL($constructor_args) +
    5. Calls $new_object->BUILDALL($constructor_args)
      ... which calls all BUILD methods
    6. Returns the object
    @@ -967,6 +968,7 @@ sub BUILD {
    • Technically it's a hash reference
    • If you ever treat it as one you are doing it wrong!
      • +
    • Moose probably provides a feature to do what you need
@@ -976,6 +978,7 @@ sub BUILD {
@@ -1029,7 +1032,7 @@ extends 'LWP';
  • No DEMOLISH()
    • -
  • But see MooseX::NonMoose for a workaround
    • +
  • But MooseX::NonMoose fixes all of this
    • @@ -1039,6 +1042,7 @@ extends 'LWP'; @@ -1050,13 +1054,13 @@ use Moose; extends 'Person'; -override work => sub { +override work => sub { my $self = shift; die "Pay me first" unless $self->got_paid; - super(); -}; + super(); +};
    @@ -1065,7 +1069,8 @@ use Moose;
    @@ -1106,8 +1111,7 @@ has first_name => ( is => 'ro' ); my $person = Person->new( first_name => 'Dave' ); -$person->first_name('Stevan'); -print $person->first_name; # Dave +$person->first_name('Stevan'); # dies @@ -1126,7 +1130,7 @@ print $person->first_name; # Dave use Moose; # true -Person->can('extends'); +Person->can('extends'); + + +
    +

    Basic Attributes Summary

    + +
    -

    What is a Method Modifier

    +

    What Are Method Modifiers For?

    @@ -2372,7 +2310,7 @@ after clear_password => sub { $self->$orig( $self->_munge_insert(@_) ); - $new_user->_assign_uri; + $new_user->_assign_uri; return $new_user; }; @@ -2431,59 +2369,6 @@ around run => sub {
    -

    Augment and Inner

    - - -
    - -
    -

    Augment and Inner

    - - 
    package Document;
-
-sub xml { '<doc>' . inner() . '</doc>' }
-
-package Report;
-extends 'Document';
-augment xml =>
-    sub { title() . inner() . summary() };
-
-package TPSReport;
-extends 'Report';
-augment xml =>
-    sub { tps_xml() . inner() };
    -
    - -
    -

    Augment and Inner

    - - -
    - -
    -

    Augment and Inner Usage

    - - -
    - -

    Method Modifiers Summary

    - -
    - -
    -

    Method Modifiers Summary

    - -
    @@ -2578,11 +2449,11 @@ Item Undef Defined Value - Str - Num - Int - ClassName - RoleName + Str + Num + Int + ClassName + RoleName @@ -2600,7 +2471,7 @@ Item CodeRef RegexpRef GlobRef - FileHandle + FileHandle Object @@ -2609,15 +2480,12 @@ Item

    Bool

    True

    - 
    1
-924.1
-'true'
-{}
    + 
    1

    False

    0
-0.0
 '0'
+''
 undef
    @@ -3068,15 +2958,6 @@ has transaction_history => (

    Questions?

    -
    -

    Exercises

    - - 
    # cd exercises
-# perl bin/prove -lv t/05-types.t
-
-Iterate til this passes all its tests
    -
    -

    Part 6: Advanced Attributes

    @@ -3174,7 +3055,7 @@ $alice->friend($bob);     
    after salary_level => {
     my $self = shift;
-    return unless @_;
+    return unless @_;
     $self->clear_salary;
 };
    @@ -3186,11 +3067,22 @@ $alice->friend($bob); 
    has salary_level => (
     is      => 'rw',
-    trigger => sub { $_[0]->clear_salary },
+    trigger =>
+        sub { $_[0]->clear_salary },
 );
    +

    Trigger Arguments

    + + +
    + +

    Delegation

    @@ -3369,7 +3262,6 @@ has history => ( use Moose; has _favorite_numbers => ( traits => [ 'Array' ], - is => 'ro', isa => 'ArrayRef[Int]', default => sub { [] }, init_arg => undef, @@ -3407,7 +3299,7 @@ print "$_\n"
  • Bool - set, toggle, ...
  • Hash - get, set, ...
  • Array - already saw it
    • -
  • Code - execute, that's it
    • +
  • Code - execute and execute_method
    • @@ -3432,7 +3324,7 @@ has account => ( isa => 'BankAccount', handles => { receive_100 => - [ 'deposit', 100 ] + [ 'deposit', 100 ], give_100 => [ 'withdraw', 100 ] }, @@ -3472,7 +3364,7 @@ $person->account->deposit(100);

    Traits and Metaclasses

    @@ -3530,6 +3422,7 @@ print Person->meta
  • Use weak_ref to avoid circular references
  • Use trigger to do an action post-attribute write
  • Use delegations to hide "internal" objects
    • +
  • Use native delegations to treat Perl types as objects
  • Traits and metaclasses let you extend Moose's core attribute features
    • @@ -3548,12 +3441,20 @@ print Person->meta Iterate til this passes all its tests -
    -

    Part 7: Introspection

    +
    +

    CYOA

    + +

    + If there is time, keep going ... +

    + +

    + Otherwise, jump to slide 269 ... +

    -

    Part 8: A Brief Tour of MooseX

    +

    Bonus: A Brief Tour of MooseX

    @@ -3561,7 +3462,7 @@ Iterate til this passes all its tests
    • Not comprehensive
      • -
    • 128 MooseX distributions on CPAN as of 09/24/2009
      • +
    • 188 MooseX distributions on CPAN as of 02/03/2011
    • Some of them are crap
    @@ -3570,11 +3471,11 @@ Iterate til this passes all its tests

    Already Mentioned Several

      -
    • MooseX::NonMoose - best solution for subclassing non-Moose parents
      • -
    • MooseX::Declare - real Perl 5 OO
      • -
    • MooseX::FollowPBP and MooseX::SemiAffordanceAccessor
      • -
    • MooseX::Params::Validate and MooseX::Method::Signatures
      • -
    • MooseX::Types
      • +
    • MooseX::NonMoose - best solution for subclassing non-Moose parents
      • +
    • MooseX::Declare - real Perl 5 OO
      • +
    • MooseX::FollowPBP and MooseX::SemiAffordanceAccessor
      • +
    • MooseX::Params::Validate and MooseX::Method::Signatures
      • +
    • MooseX::Types
    @@ -3582,11 +3483,11 @@ Iterate til this passes all its tests

    MooseX::Declare

    use MooseX::Declare;
-use 5.10.0; # for say
+use 5.12.0; # for say
 
 class Person {
-    has greeting
-        => ( is => 'ro', isa => 'Str' );
+    has greeting =>
+        ( is => 'ro', isa => 'Str' );
 
     method speak {
         say $self->greeting;
@@ -3601,6 +3502,7 @@ class Person {
     
  • Still experimental-ish, but seeing more and more use
    • 
     
  • Not a source filter!
    • 
     
  • Hooks into the Perl parser rather than filtering all your code
    • 
+    
  • But not supported by PPI, perltidy, etc. (yet?)
    • 
   
 
 
@@ -3608,7 +3510,7 @@ class Person {
   
    MooseX::StrictConstructor
    
 
   
      
-    
    • By default, unknown constructor arguments are ignore
      • 
+    
    • By default, unknown constructor arguments are ignored
      • 
     
    • MX::StrictConstructor turns these into an error
      • 
   
    
 
@@ -3670,7 +3572,7 @@ use Moose;
 has file    =>
     ( is => 'ro', required => 1 );
 has filters =>
-    ( is => 'ro', isa => 'Str' );
+    ( is => 'ro', isa => 'ArrayRef[Str]' );
 
 sub run { ... }
    @@ -3686,7 +3588,7 @@ sub run { ... } use App::CLI; -App::CLI->new_with_options()->run(); +App::CLI->new_with_options()->run(); 
    $ myapp-cli \
    --file foo \
@@ -3746,12 +3648,21 @@ with HasCollection => { type => 'Int' };

    Questions?

    -
    -

    Part 9: Writing Moose Extensions

    -
    +
    +

    Moose-using Modules

    -
    -

    The End

    +

    + For further reading, a few modules which use Moose ... +

    + +
    @@ -3764,10 +3675,14 @@ with HasCollection => { type => 'Int' };
  • mailing list - moose@perl.org
  • Slides and exercises are in Moose's git repo:
    - git://jules.scsys.co.uk/gitmo/moose-presentations
    • + git://git.moose.perl.org/moose-presentations.git
    +
    +

    The End

    +
    +