NAME
Defaults::Modern - Yet another approach to modernistic Perl
SYNOPSIS
use Defaults::Modern;
# Function::Parameters + List::Objects::WithUtils + types ->
fun to_immutable ( (ArrayRef | ArrayObj) $arr ) {
# blessed() and confess() are available (amongst others):
my $immutable = immarray( blessed $arr ? $arr->all : @$arr );
confess 'No items in array!' unless $immutable->has_any;
$immutable
}
package My::Foo {
use Defaults::Modern;
# define keyword for defining constants ->
define ARRAY_MAX = 10;
# Moo(se) with types ->
use Moo;
use MooX::late;
has myarray => (
isa => ArrayObj,
is => 'ro',
writer => '_set_myarray',
# MooX::late allows us to coerce from an ArrayRef:
coerce => 1,
default => sub { [] },
);
# Method with optional positional param and implicit $self ->
method slice_to_max (Int $max = -1) {
my $arr = $self->myarray;
$self->_set_myarray(
$arr->sliced( 0 .. $max >= 0 ? $max : ARRAY_MAX )
)
}
}
# Optionally autobox list-type refs via List::Objects::WithUtils ->
use Defaults::Modern 'autobox_lists';
my $obj = +{ foo => 'bar', baz => 'quux' }->inflate;
my $baz = $obj->baz;
# See DESCRIPTION for complete details on imported functionality.
DESCRIPTION
Yet another approach to writing Perl in a modern style.
. . . also saves me extensive typing ;-)
When you "use Defaults::Modern", you get:
* strict and fatal warnings except for "once"; additionally disallow
bareword::filehandles and indirect method calls
* The "v5.14" feature set ("state", "say", "unicode_strings",
"array_base") -- except for "switch", which is deprecated in newer
perls
* carp, croak, and confess error reporting tools from Carp
* blessed, reftype, and weaken utilities from Scalar::Util
* All of the List::Objects::WithUtils object constructors (array,
array_of, immarray, immarray_of, hash, hash_of, immhash, immhash_of)
* fun and method keywords from Function::Parameters
* The full Types::Standard set and List::Objects::Types -- useful in
combination with Function::Parameters (see the "SYNOPSIS" and
Function::Parameters POD)
* try and catch from Try::Tiny
* The path object constructor from Path::Tiny and related
types/coercions from Types::Path::Tiny
* maybe and provided definedness-checking syntax sugar from
PerlX::Maybe
* A define keyword for defining constants based on PerlX::Define
* The |M| match operator from match::simple
* The sswitch and nswitch switch/case constructs from Switch::Plain
* true.pm so you can skip adding '1;' to all of your modules
If you want to automatically load (shown here with the '-all' import
tag, as well) and register other Type::Registry compatible libraries
(see Type::Library), they can be specified at import time:
use Defaults::Modern
-all,
-with_types => [ 'Types::Mine' ],
If you import the tag "autobox_lists", ARRAY and HASH type references
are autoboxed via List::Objects::WithUtils:
use Defaults::Modern 'autobox_lists';
my $itr = [ 1 .. 10 ]->natatime(2);
Moo and MooX::late are depended upon in order to guarantee their
availability, but not automatically imported:
use Moo;
use MooX::late;
use Defaults::Modern;
has foo => (
is => 'ro',
isa => ArrayObj,
coerce => 1,
default => sub { [] },
);
(If you're building classes, you may want to look into namespace::clean
/ namespace::sweep or similar -- Defaults::Modern imports an awful lot
of Stuff. Moops may be nicer to work with.)
SEE ALSO
This package just glues together useful parts of CPAN, the most visible
portions of which come from the following modules:
Carp
Function::Parameters
List::Objects::WithUtils and List::Objects::Types
match::simple
Path::Tiny
PerlX::Maybe
Scalar::Util
Switch::Plain
Try::Tiny
Types::Standard
Type::Tiny
AUTHOR
Jon Portnoy <
[email protected]>
Licensed under the same terms as Perl.
Inspired by Defaults::Mauke and Moops.
The code backing the define keyword is forked from TOBYINK's
PerlX::Define to avoid the Moops dependency and is copyright Toby
Inkster.
