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diff --git a/moose-class/slides/index.html b/moose-class/slides/index.html
index 802425f..e8302e4 100644
--- a/moose-class/slides/index.html
+++ b/moose-class/slides/index.html
@@ -950,10 +950,10 @@ sub BUILD {
Object Construction a la Moose
-
Person->new(@_)
+
Person->new(@args)
- - Calls
Person->BUILDARGS(@_) to turn @_ into a hashref
+ - Calls
Person->BUILDARGS(@args) to turn @args into a hashref
- Blesses a reference
- Populates attributes based on the hashref from #1
- Calls
$new_object->BUILDALL($constructor_args)
@@ -1032,7 +1032,7 @@ extends 'LWP';
- No
DEMOLISH()
- - But see
MooseX::NonMoose for a workaround
+ - But
MooseX::NonMoose fixes all of this
@@ -1234,8 +1234,6 @@ use Moose;
# perl bin/prove -lv t/00-prereq.t
-# perl install-moose (if needed)
-
## Read the instructions in t/01-classes.t
# perl bin/prove -lv t/01-classes.t
@@ -2017,7 +2015,7 @@ Person->new( shoes => Shoes->new );Attribute Inheritance
- - By default, subclasses inherit attribute as-is
+ - By default, subclasses inherit attributes as-is
- Can change attribute parameters in subclasses
@@ -2602,11 +2600,15 @@ 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 { ... };
@@ -2616,11 +2618,15 @@ class_type '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(
@@ -2632,11 +2638,15 @@ role_type '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 ) },
@@ -2647,11 +2657,15 @@ duck_type Car => qw( run break_down );
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'
@@ -2666,7 +2680,9 @@ subtype 'Color'
package Person;
my $posint =
- subtype as 'Int', where { $_ > 0 };
+ subtype
+ as 'Int',
+ where { $_ > 0 };
has size => (
is => 'ro',
@@ -2946,10 +2962,21 @@ has transaction_history => (
+
Specio
+
+
+ - My attempt to replace
MooseX::Types and built-in types
+ - Third-system effect?
+ - Still alpha - needs some work
+
+
Recommendation
- - Use
MooseX::Types
+ - Use
MooseX::Types for now
+ - Switch to
Specio when it's ready?
- Compile time error catching and automatic namespacing are huge wins
- Docs from
Moose::Util::TypeConstraints are 98% compatible with MooseX::Types anyway
- A function exported by a type library works wherever a type name would
@@ -3111,6 +3138,25 @@ has lungs => (
+
Delegation Explained
+
+
package Person;
+
+has lungs => (
+ is => 'ro',
+ isa => 'Lungs',
+ handles => [ 'inhale', 'exhale' ],
+);
+
+sub inhale {
+ my $self = shift;
+ $self->lungs()->inhale();
+}
+
+sub exhale { ... }
+
Why Delegation?
@@ -3174,8 +3220,12 @@ has account => (
},
- $person->receive_money = $person->account->deposit$person->give_money = $person->account->withdraw$person->receive_money
+
+ = $person->account->deposit$person->give_money
+
+ = $person->account->withdraw
@@ -3263,7 +3313,7 @@ has history => (
package Person;
use Moose;
has _favorite_numbers => (
- traits => [ 'Array' ],
+ traits => [ 'Array' ],
isa => 'ArrayRef[Int]',
default => sub { [] },
init_arg => undef,
@@ -3342,82 +3392,6 @@ $person->account->deposit(100);
-
Traits and Metaclasses
-
-
- - The ultimate in customization
- - Per attribute metaclasses
- - Per attribute roles applied to the attribute metaclass
- - Change the meta-level behavior
-
-
-
Traits and Metaclasses
-
-
- - The default metaclass is
Moose::Meta::Attribute
- - Controls accessor generation, defaults, delegation, etc.
- - Adding a role to this metaclass (or replacing it) allows for infinite customization
-
-
-
Traits and Metaclasses
-
-
- - Can add/alter/remove an attribute parameter (from
has)
- - Can change behavior of created attribute
-
-
-
Simple Trait Example
-
-
package Person;
-use Moose;
-use MooseX::LabeledAttributes;
-
-has ssn => (
- traits => [ 'Labeled' ],
- is => 'ro',
- isa => 'Str',
- label => 'Social Security Number',
-);
-print Person->meta
- ->get_attribute('ssn')->label;
-
-
Simple Metaclass Example
-
-
package Person;
-use Moose;
-use MooseX::LabeledAttributes;
-
-has ssn => (
- metaclass =>
- 'MooseX::Meta::Attribute::Labeled',
- is => 'ro',
- isa => 'Str',
- label => 'Social Security Number',
-);
-print Person->meta
- ->get_attribute('ssn')->label;
-
-
Traits vs Metaclass
-
-
- - Can apply any mix of traits to an attribute
- - But just one metaclass
- - Traits (aka roles) can cooperate
- - Metaclasses require you to pick just one
-
-
Advanced Attributes Summary
@@ -3425,7 +3399,6 @@ print Person->meta
- 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
@@ -3658,12 +3631,13 @@ with HasCollection => { type => 'Int' };
@@ -3672,12 +3646,12 @@ with HasCollection => { type => 'Int' };
@@ -3691,7 +3665,7 @@ with HasCollection => { type => 'Int' };