X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=moose-class%2Fslides%2Findex.html;h=6e8415c7dadaff7ba8bdb2d8661bb3c394683371;hb=1a2103f568e2d2b2522685fe814263f63dce3223;hp=973b8258e0dda8540169e302fc89dc72abbe7abe;hpb=86178e0ffcf4959d0a172395daa66421137fb2fe;p=gitmo%2Fmoose-presentations.git diff --git a/moose-class/slides/index.html b/moose-class/slides/index.html index 973b825..6e8415c 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

@@ -218,7 +218,7 @@ use Moose;
@@ -300,8 +300,8 @@ 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
@@ -955,7 +955,7 @@ sub BUILD {
  • Calls Person->BUILDARGS(@_) to turn @_ into a hashref
  • Blesses a reference
  • Populates attributes based on the hashref from #1
    • -
  • Calls $new_object->BUILDALL($constructor_args) +
  • Calls $new_object->BUILDALL($constructor_args)
    ... which calls all BUILD methods
  • Returns the object
    • @@ -1066,6 +1066,7 @@ use Moose;
  • Mostly like $self->SUPER::work(@_)
  • But cannot change @_!
  • Binds the parent's method at compile time
    • +
  • Parent determined by checking Child->meta()->superclasses()
    • @@ -1126,7 +1127,7 @@ 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 +2397,7 @@ after clear_password => sub { $self->$orig( $self->_munge_insert(@_) ); - $new_user->_assign_uri; + $new_user->_assign_uri; return $new_user; }; @@ -2436,6 +2461,7 @@ around run => sub { @@ -2578,11 +2604,10 @@ Item Undef Defined Value - Str - Num - Int - ClassName - RoleName + Str + Num + Int + ClassName @@ -2600,7 +2625,7 @@ Item CodeRef RegexpRef GlobRef - FileHandle + FileHandle Object @@ -2732,9 +2757,11 @@ has start_date => (

    Subtype Shortcuts - class_type

    use Moose::Util::TypeConstraints;
-class_type 'DateTime';
+class_type 'DateTime';
    + +
    -subtype 'DateTime', +
    subtype 'DateTime',
     as      'Object',
     where   { $_->isa('DateTime') },
     message { ... };
    @@ -2744,9 +2771,11 @@ subtype 'DateTime',

    Subtype Shortcuts - role_type

    use Moose::Util::TypeConstraints;
-role_type 'Printable';
+role_type 'Printable';
    -subtype 'Printable', +
    + +
    subtype 'Printable',
     as      'Object',
     where
         { Moose::Util::does_role(
@@ -2758,9 +2787,11 @@ subtype 'Printable',
   
    Subtype Shortcuts - duck_type
    
 
   
    use Moose::Util::TypeConstraints;
-duck_type Car => qw( run break_down );
+duck_type Car => qw( run break_down );
    
+
+
    
 
-subtype 'Car',
+
    subtype 'Car',
     as      'Object',
     where   { all { $_->can($_) }
               qw( run break_down ) },
@@ -2771,9 +2802,11 @@ subtype 'Car',
   
    Subtype Shortcuts - enum
    
 
   
    use Moose::Util::TypeConstraints;
-enum Color => qw( red blue green ) );
+enum Color => qw( red blue green ) );
    
 
-my %ok = map { $_ => 1 }
+
    
+
+
    my %ok = map { $_ => 1 }
              qw( red blue green );
 
 subtype 'Color'
@@ -3034,7 +3067,7 @@ has transaction_history => (
   
      
     
    • Type names are exported functions, catches typos early
      • 
     
    • Types must be pre-declared
      • 
-    
    • Types are stored with namespaces internally, but externally are short
      • 
+    
    • Types are stored with namespaces internally, but you use short names
      • 
     
    • Import existing Moose types as functions from MooseX::Types::Moose
      • 
     
    • Still need string names for things like ArrayRef['Email::Address']
      • 
   
    
@@ -3047,7 +3080,7 @@ has transaction_history => (
     
  • Catches typos at compile time
    • 
     
  • Automatic namespacing
    • 
     
  • One more thing to install and learn
    • 
-    
  • Every name gets types twice (declared and then defined)
    • 
+    
  • Every name is typed twice (declared and then defined)
    • 
     
  • Still stuck with strings when referring to class or role names
    • 
     
  • Coercion gotcha from earlier still applies to types exported from MooseX::Types::Moose
    • 
   
@@ -3174,7 +3207,7 @@ $alice->friend($bob);
    
 
   
    after salary_level => {
     my $self = shift;
-    return unless @_;
+    return unless @_;
     $self->clear_salary;
 };
    
 
@@ -3186,11 +3219,22 @@ $alice->friend($bob);
    
 
   
    has salary_level => (
     is      => 'rw',
-    trigger => sub { $_[0]->clear_salary },
+    trigger =>
+        sub { $_[0]->clear_salary },
 );
    
 
 
 
    
+  
    Trigger Arguments
    
+
+  
      
+    
    • $self
      • 
+    
    • $new_value
      • 
+    
    • $old_value - if one exists
      • 
+  
    
+
    
+
+
    
   
    Delegation
    
 
   
      
@@ -3247,6 +3291,7 @@ has lungs => (
   
      Array Reference
      
 
   
        
+    
      • 1-to-1 mapping
        • 
     
      • Takes each method name and creates a simple delegation from the delegating class to the delegatee attribute
        • 
   
      
 
    
@@ -3407,7 +3452,7 @@ print "$_\n"
         
  • Bool - set, toggle, ...
    • 
         
  • Hash - get, set, ...
    • 
         
  • Array - already saw it
    • 
-        
  • Code - execute, that's it
    • 
+        
  • Code - execute and execute_method
    • 
       
     
   
@@ -3472,7 +3517,7 @@ $person->account->deposit(100);

    Traits and Metaclasses

    @@ -3561,7 +3606,7 @@ Iterate til this passes all its tests @@ -3671,7 +3716,7 @@ use Moose; has file => ( is => 'ro', required => 1 ); has filters => - ( is => 'ro', isa => 'Str' ); + ( is => 'ro', isa => 'ArrayRef[Str]' ); sub run { ... }     @@ -3687,7 +3732,7 @@ sub run { ... } use App::CLI; -App::CLI->new_with_options()->run(); +App::CLI->new_with_options()->run(); 
    $ myapp-cli \
    --file foo \
@@ -3765,7 +3810,7 @@ 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://jules.scsys.co.uk/gitmo/moose-presentations