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.\" ========================================================================
.\"
.IX Title "Mojo::Base 3pm"
.TH Mojo::Base 3pm "2012-09-05" "perl v5.14.2" "User Contributed Perl Documentation"
.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
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.SH "NAME"
Mojo::Base \- Minimal base class for Mojo projects
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
.Vb 2
\&  package Cat;
\&  use Mojo::Base \-base;
\&
\&  has \*(Aqmouse\*(Aq;
\&  has paws => 4;
\&  has [qw(ears eyes)] => 2;
\&
\&  package Tiger;
\&  use Mojo::Base \*(AqCat\*(Aq;
\&
\&  has stripes => 42;
\&
\&  package main;
\&  use Mojo::Base \-strict;
\&
\&  my $mew = Cat\->new(mouse => \*(AqMickey\*(Aq);
\&  say $mew\->paws;
\&  say $mew\->paws(5)\->ears(4)\->paws;
\&
\&  my $rawr = Tiger\->new(stripes => 23);
\&  say $rawr\->ears * $rawr\->stripes;
.Ve
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
Mojo::Base is a simple base class for Mojo projects.
.PP
.Vb 4
\&  # Automatically enables "strict", "warnings" and Perl 5.10 features
\&  use Mojo::Base \-strict;
\&  use Mojo::Base \-base;
\&  use Mojo::Base \*(AqSomeBaseClass\*(Aq;
.Ve
.PP
All three forms save a lot of typing.
.PP
.Vb 4
\&  # use Mojo::Base \-strict;
\&  use strict;
\&  use warnings;
\&  use feature \*(Aq:5.10\*(Aq;
\&
\&  # use Mojo::Base \-base;
\&  use strict;
\&  use warnings;
\&  use feature \*(Aq:5.10\*(Aq;
\&  use Mojo::Base;
\&  push @ISA, \*(AqMojo::Base\*(Aq;
\&  sub has { Mojo::Base::attr(_\|_PACKAGE_\|_, @_) }
\&
\&  # use Mojo::Base \*(AqSomeBaseClass\*(Aq;
\&  use strict;
\&  use warnings;
\&  use feature \*(Aq:5.10\*(Aq;
\&  require SomeBaseClass;
\&  push @ISA, \*(AqSomeBaseClass\*(Aq;
\&  use Mojo::Base;
\&  sub has { Mojo::Base::attr(_\|_PACKAGE_\|_, @_) }
.Ve
.SH "FUNCTIONS"
.IX Header "FUNCTIONS"
Mojo::Base exports the following functions if imported with the \f(CW\*(C`\-base\*(C'\fR
flag or a base class.
.ie n .SS """has"""
.el .SS "\f(CWhas\fP"
.IX Subsection "has"
.Vb 6
\&  has \*(Aqname\*(Aq;
\&  has [qw(name1 name2 name3)];
\&  has name => \*(Aqfoo\*(Aq;
\&  has name => sub {...};
\&  has [qw(name1 name2 name3)] => \*(Aqfoo\*(Aq;
\&  has [qw(name1 name2 name3)] => sub {...};
.Ve
.PP
Create attributes, just like the \f(CW\*(C`attr\*(C'\fR method.
.SH "METHODS"
.IX Header "METHODS"
Mojo::Base implements the following methods.
.ie n .SS """new"""
.el .SS "\f(CWnew\fP"
.IX Subsection "new"
.Vb 3
\&  my $object = BaseSubClass\->new;
\&  my $object = BaseSubClass\->new(name => \*(Aqvalue\*(Aq);
\&  my $object = BaseSubClass\->new({name => \*(Aqvalue\*(Aq});
.Ve
.PP
This base class provides a basic object constructor. You can pass it either a
hash or a hash reference with attribute values.
.ie n .SS """attr"""
.el .SS "\f(CWattr\fP"
.IX Subsection "attr"
.Vb 7
\&  $object\->attr(\*(Aqname\*(Aq);
\&  BaseSubClass\->attr(\*(Aqname\*(Aq);
\&  BaseSubClass\->attr([qw(name1 name2 name3)]);
\&  BaseSubClass\->attr(name => \*(Aqfoo\*(Aq);
\&  BaseSubClass\->attr(name => sub {...});
\&  BaseSubClass\->attr([qw(name1 name2 name3)] => \*(Aqfoo\*(Aq);
\&  BaseSubClass\->attr([qw(name1 name2 name3)] => sub {...});
.Ve
.PP
Create attributes. An array reference can be used to create more than one
attribute. Pass an optional second argument to set a default value, it should
be a constant or a sub reference. The sub reference will be excuted at
accessor read time if there's no set value.
.SH "DEBUGGING"
.IX Header "DEBUGGING"
You can set the \f(CW\*(C`MOJO_BASE_DEBUG\*(C'\fR environment variable to get some advanced
diagnostics information printed to \f(CW\*(C`STDERR\*(C'\fR.
.PP
.Vb 1
\&  MOJO_BASE_DEBUG=1
.Ve
.SH "SEE ALSO"
.IX Header "SEE ALSO"
Mojolicious, Mojolicious::Guides, <http://mojolicio.us>.