• NAME
• ABSTRACT
• SYNOPSIS
• DESCRIPTION
• INTEGRATES
• METHODS
  • assertion
  • checksum
  • numified
  • renew
  • safe
  • self
  • stringified
  • trap

NAME

Venus::Kind - Kind Base Class

ABSTRACT

Kind Base Class for Perl 5

SYNOPSIS

  package Example;

  use Venus::Class;

  base 'Venus::Kind';

  package main;

  my $example = Example->new;

  # bless({}, "Example")

DESCRIPTION

This package provides identity and methods common across all Venus classes.

INTEGRATES

This package integrates behaviors from:

Venus::Role::Assertable

Venus::Role::Boxable

Venus::Role::Catchable

Venus::Role::Comparable

Venus::Role::Digestable

Venus::Role::Doable

Venus::Role::Dumpable

Venus::Role::Matchable

Venus::Role::Printable

Venus::Role::Reflectable

Venus::Role::Testable

Venus::Role::Throwable

Venus::Role::Tryable

METHODS

This package provides the following methods:

assertion

  assertion() (Assert)

The assertion method returns a Venus::Assert object based on the invocant.

Since 1.23

assertion example 1

  # given: synopsis

  package main;

  my $assertion = $example->assertion;

  # bless({name => "Example"}, "Venus::Assert")

checksum

  checksum() (Str)

The checksum method returns an md5 hash string representing the stringified object value (or the object itself).

Since 0.08

checksum example 1

  # given: synopsis;

  my $checksum = $example->checksum;

  # "859a86eed4b2d97eb7b830b02f06de32"

checksum example 2

  package Checksum::Example;

  use Venus::Class;

  base 'Venus::Kind';

  attr 'value';

  package main;

  my $example = Checksum::Example->new(value => 'example');

  my $checksum = $example->checksum;

  # "1a79a4d60de6718e8e5b326e338ae533"

numified

  numified() (Int)

The numified method returns the numerical representation of the object which is typically the length (or character count) of the stringified object.

Since 0.08

numified example 1

  # given: synopsis;

  my $numified = $example->numified;

  # 22

numified example 2

  package Numified::Example;

  use Venus::Class;

  base 'Venus::Kind';

  attr 'value';

  package main;

  my $example = Numified::Example->new(value => 'example');

  my $numified = $example->numified;

  # 7

renew

  renew(Any @args) (Object)

The renew method returns a new instance of the invocant by instantiating the underlying class passing all recognized class attributes to the constructor. Note: This method is not analogous to clone, i.e. attributes which are references will be passed to the new object as references.

Since 1.23

renew example 1

  # given: synopsis

  package main;

  my $renew = $example->renew;

  # bless({}, "Example")

renew example 2

  package Example;

  use Venus::Class;

  base 'Venus::Kind';

  attr 'values';

  package main;

  my $example = Example->new(values => [1,2]);

  my $renew = $example->renew;

  # bless({values => [1,2]}, "Example")

renew example 3

  package Example;

  use Venus::Class;

  base 'Venus::Kind';

  attr 'keys';
  attr 'values';

  package main;

  my $example = Example->new(values => [1,2]);

  my $renew = $example->renew(keys => ['a','b']);

  # bless({keys => ["a","b"], values => [1,2]}, "Example")

safe

  safe(Str | CodeRef $code, Any @args) (Any)

The safe method dispatches the method call or executes the callback and returns the result, supressing warnings and exceptions. If an exception is thrown this method will return undef. This method supports dispatching, i.e. providing a method name and arguments whose return value will be acted on by this method.

Since 0.08

safe example 1

  # given: synopsis;

  my $safe = $example->safe('class');

  # "Example"

safe example 2

  # given: synopsis;

  my $safe = $example->safe(sub {
    ${_}->class / 2
  });

  # '0'

safe example 3

  # given: synopsis;

  my $safe = $example->safe(sub {
    die;
  });

  # undef

self

  self() (Any)

The self method returns the invocant.

Since 1.23

self example 1

  # given: synopsis

  package main;

  my $self = $example->self;

  # bless({}, "Example")

stringified

  stringified() (Str)

The stringified method returns the object, stringified (i.e. a dump of the object's value).

Since 0.08

stringified example 1

  # given: synopsis;

  my $stringified = $example->stringified;

  # bless({}, 'Example')

stringified example 2

  package Stringified::Example;

  use Venus::Class;

  base 'Venus::Kind';

  attr 'value';

  package main;

  my $example = Stringified::Example->new(value => 'example');

  my $stringified = $example->stringified;

  # "example"

trap

  trap(Str | CodeRef $code, Any @args) (Tuple[ArrayRef, ArrayRef, ArrayRef])

The trap method dispatches the method call or executes the callback and returns a tuple (i.e. a 3-element arrayref) with the results, warnings, and exceptions from the code execution. If an exception is thrown, the results (i.e. the 1st-element) will be an empty arrayref. This method supports dispatching, i.e. providing a method name and arguments whose return value will be acted on by this method.

Since 0.08

trap example 1

  # given: synopsis;

  my $result = $example->trap('class');

  # ["Example"]

trap example 2

  # given: synopsis;

  my ($results, $warnings, $errors) = $example->trap('class');

  # (["Example"], [], [])

trap example 3

  # given: synopsis;

  my $trap = $example->trap(sub {
    ${_}->class / 2
  });

  # ["0"]

trap example 4

  # given: synopsis;

  my ($results, $warnings, $errors) = $example->trap(sub {
    ${_}->class / 2
  });

  # (["0"], ["Argument ... isn't numeric in division ..."], [])

trap example 5

  # given: synopsis;

  my $trap = $example->trap(sub {
    die;
  });

  # []

trap example 6

  # given: synopsis;

  my ($results, $warnings, $errors) = $example->trap(sub {
    die;
  });

  # ([], [], ["Died..."])

cpanm Venus

perl -MCPAN -e shell
install Venus