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;

    has myarray => (
      is      => 'ro',
      isa     => ArrayObj,
      writer  => '_set_myarray',
      coerce  => 1,
      builder => 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:

• strictures (version 2), which enables strict and makes most warnings fatal; additionally bareword::filehandles and indirect method calls are disallowed explicitly (not just in development environments)

• The v5.14 feature set (state, say, unicode_strings, array_base) -- except for switch, which is deprecated in newer perls (and Switch::Plain is provided anyway).

  experimental warnings are also disabled on v5.18+.

• 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 configured to accept Type::Tiny types (amongst other reasonably sane defaults including arity checks)

• 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

• The qc, qcw, and qc_to code-interpolating keywords from Quote::Code (as of Defaults::Modern v0.11.1)

• true.pm so you can skip adding '1;' to all of your modules

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 version 2+ is depended upon in order to guarantee availability, but not automatically imported:

  use Defaults::Modern;
  use Moo;
  use MooX::TypeTiny;   # recommended for faster inline type checks

  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:

  use Defaults::Modern;
  use Moo;
  use namespace::clean;
  # ...

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

Quote::Code

Scalar::Util

Switch::Plain

Try::Tiny

Types::Standard

Type::Tiny

AUTHOR

Jon Portnoy <avenj@cobaltirc.org>

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.