X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=moose-class%2Fslides%2Findex.html;h=72e8bbedbfcb85a3b5b06ff61c5b9996dc1caa43;hb=88ba73cb2747fd9eb409a0ce9e22188d4ecec76b;hp=7c57d21d4ae1eb31a769326c0268e7b8beeac735;hpb=cd02a58e2785ea5ff6ad393b916627181d3c5a5d;p=gitmo%2Fmoose-presentations.git
diff --git a/moose-class/slides/index.html b/moose-class/slides/index.html
index 7c57d21..72e8bbe 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
- Dave Rolsky
+ Dave Rolsky
@@ -71,8 +71,8 @@ img#me05 {top: 43px;left: 36px;}
- Declarative OO sugar
- Introspectable
- - Extensible (177 MooseX::* on CPAN)
- - Community approved (1222 downstream dependents on CPAN)
+ - Extensible (188 MooseX::* on CPAN)
+ - Community approved (1200+ downstream dependents on CPAN)
package Person;
use Moose;
-has first_name => ( is => 'rw' );
+has first_name => ( is => 'ro' );
@@ -1069,7 +1069,7 @@ use Moose;
- Mostly like
$self->SUPER::work(@_)
- But cannot change
@_!
- - Binds the parent's method at compile time
+ - Binds the parent's method correctly at compile time
- Parent determined by checking
Child->meta()->superclasses()
@@ -1236,6 +1236,8 @@ use Moose;
# perl install-moose (if needed)
+## Read the instructions in t/01-classes.t
+
# perl bin/prove -lv t/01-classes.t
# edit lib/Person.pm and lib/Employee.pm
@@ -1307,23 +1309,25 @@ sub print {
package Person;
use Moose;
-with 'HasPermissions';
+with 'Printable';
Classes Consume Roles
-
my $person = Person->new(
+package Person;
+
+sub as_string { $_[0]->first_name() }
+
+...
+
+my $person = Person->new(
first_name => 'Kenichi',
last_name => 'Asai',
access_level => 42,
);
-print $person->full_name
- . ' has '
- . $person->can_access(42)
- ? 'great power'
- : 'little power';
+$person->print();
@@ -1340,7 +1344,9 @@ print $person->full_name
package Person;
use Moose;
-with 'Printable';
+
with 'Printable';
+
+sub as_string { $_[0]->first_name() }
@@ -1351,6 +1357,8 @@ use Moose;
with 'Printable';
+sub as_string { $_[0]->first_name() }
+
has has_been_printed => ( is => 'rw' );
sub print {
@@ -1656,8 +1664,6 @@ requires 'compare';
Real Examples
- - Column and ColumnAlias both do ColumnLike
- - ColumnLike things can be used in certain parts of queries
- All queries do HasWhereClause
- Select does Comparable and Selectable (for subselects)
- A where clause requires its components to do Comparable
@@ -1804,6 +1810,7 @@ use Moose;
has bank => (
is => 'rw',
+ # THIS WILL NOT WORK
default => Bank->new(
name => 'Spire FCU' ),
);
@@ -1826,22 +1833,6 @@ has packages => (
-
What if I Want to Share?
-
-
package Person;
-use Moose;
-
-my $highlander_bank =
- Bank->new(
- name => 'Clan MacLeod Trust' );
-
-has bank => (
- is => 'rw',
- default => sub { $highlander_bank },
-);
-
Builder
@@ -2046,15 +2037,7 @@ Person->new( shoes => Shoes->new );
- By default, subclasses inherit attribute as-is
- - Can change some attribute parameters in subclasses
-
- - default
- - builder
- - required
- - lazy
- - others we've not yet covered
-
-
+ - Can change attribute parameters in subclasses
@@ -2407,62 +2390,6 @@ around run => sub {
-
Augment and Inner
-
-
- - Inverted
super
- - From least- to most-specific
- - Like Mason's autohandler feature
- - Grandparent to parent to child
- - Not allowed in roles
-
-
-
Augment and Inner
-
-
package Document;
-
-sub xml { '<doc>' . inner() . '</doc>' }
-
-package Report;
-extends 'Document';
-augment xml =>
- sub { my $self = shift;
- $self->title() . inner() . $self->summary() };
-
-package TPSReport;
-extends 'Report';
-augment xml =>
- sub { my $self = shift;
- $self->tps_xml() . inner() };
-
-
Augment and Inner
-
-
- - When we call
$tps->xml ...
-
- Document->xmlReport->xmlTPSReport->xml
-
-
-
-
Augment and Inner Usage
-
-
- - Call
inner() to "fill in the blank"
- - Requires designing for subclassing
- - Call
inner() in the terminal class, just in case
-
-
Method Modifiers Summary
@@ -2486,27 +2413,13 @@ extends 'Report';
- alter parameters passed to the original method
- alter the return value of the original method
- not call the original method at all (or call a different method)
+ - When using modifiers in a role, require the modified method
-
Method Modifiers Summary
-
-
- - When using modifiers in a role, require the modified method
- - Use
augment and inner to invert the normal subclassing flow ...
-
- - Least- to most-specific (parents to children)
- - Build in "insertability" (stick more stuff in the "middle")
-
-
- - Always call
inner in the most specific subclass to allow for future extension
-
-
Questions?
@@ -2722,7 +2635,7 @@ class_type 'DateTime';
Subtype Shortcuts - role_type
use Moose::Util::TypeConstraints;
-role_type 'Printable';
+role_type 'Printable';
@@ -3432,7 +3345,7 @@ has account => (
isa => 'BankAccount',
handles => {
receive_100 =>
- [ 'deposit', 100 ]
+ [ 'deposit', 100 ],
give_100 =>
[ 'withdraw', 100 ]
},
@@ -3566,7 +3479,7 @@ Iterate til this passes all its tests
- Not comprehensive
- - 177 MooseX distributions on CPAN as of 09/21/2010
+ - 188 MooseX distributions on CPAN as of 02/03/2011
- Some of them are crap
@@ -3587,7 +3500,7 @@ 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 =>
@@ -3606,7 +3519,7 @@ 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?)
+ But not supported by PPI, perltidy, etc. (yet?)