/ 
Venus-4.15
River stage two • 3 direct dependents • 56 total dependents
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/ t/Venus_Undef.t

Venus::Undef

Undef Class

Undef Class for Perl 5

method: cast method: default method: eq method: ge method: gele method: gt method: gtlt method: le method: lt method: ne method: numified method: stringified method: tv

package main;

use Venus::Undef;

my $undef = Venus::Undef->new;

# $undef->defined;

This package provides methods for manipulating undef data.

Venus::Kind::Value

The cast method converts "value" objects between different "value" object types, based on the name of the type provided. This method will return undef if the invocant is not a Venus::Kind::Value.

cast(string $kind) (object | undef)

{ since => '0.08', }

=example-1 cast

package main;

use Venus::Undef;

my $undef = Venus::Undef->new;

my $cast = $undef->cast('array');

# bless({ value => [undef] }, "Venus::Array")

The default method returns the default value, i.e. undef.

default() (undef)

{ since => '0.01', }

=example-1 default

# given: synopsis;

my $default = $undef->default;

# undef

The eq method performs an "equals" operation using the argument provided.

eq(any $arg) (boolean)

{ since => '0.08', }

=example-1 eq

package main;

use Venus::Array;
use Venus::Undef;

my $lvalue = Venus::Undef->new;
my $rvalue = Venus::Array->new;

my $result = $lvalue->eq($rvalue);

# 0

The ge method performs a "greater-than-or-equal-to" operation using the argument provided.

ge(any $arg) (boolean)

{ since => '0.08', }

=example-1 ge

package main;

use Venus::Array;
use Venus::Undef;

my $lvalue = Venus::Undef->new;
my $rvalue = Venus::Array->new;

my $result = $lvalue->ge($rvalue);

# 0

The gele method performs a "greater-than-or-equal-to" operation on the 1st argument, and "lesser-than-or-equal-to" operation on the 2nd argument.

gele(any $arg1, any $arg2) (boolean)

{ since => '0.08', }

=example-1 gele

package main;

use Venus::Array;
use Venus::Undef;

my $lvalue = Venus::Undef->new;
my $rvalue = Venus::Array->new;

my $result = $lvalue->gele($rvalue);

# 0

The gt method performs a "greater-than" operation using the argument provided.

gt(any $arg) (boolean)

{ since => '0.08', }

=example-1 gt

package main;

use Venus::Array;
use Venus::Undef;

my $lvalue = Venus::Undef->new;
my $rvalue = Venus::Array->new;

my $result = $lvalue->gt($rvalue);

# 0

The gtlt method performs a "greater-than" operation on the 1st argument, and "lesser-than" operation on the 2nd argument.

gtlt(any $arg1, any $arg2) (boolean)

{ since => '0.08', }

=example-1 gtlt

package main;

use Venus::Array;
use Venus::Undef;

my $lvalue = Venus::Undef->new;
my $rvalue = Venus::Array->new;

my $result = $lvalue->gtlt($rvalue);

# 0

The le method performs a "lesser-than-or-equal-to" operation using the argument provided.

le(any $arg) (boolean)

{ since => '0.08', }

=example-1 le

package main;

use Venus::Array;
use Venus::Undef;

my $lvalue = Venus::Undef->new;
my $rvalue = Venus::Array->new;

my $result = $lvalue->le($rvalue);

# 1

The lt method performs a "lesser-than" operation using the argument provided.

lt(any $arg) (boolean)

{ since => '0.08', }

=example-1 lt

package main;

use Venus::Array;
use Venus::Undef;

my $lvalue = Venus::Undef->new;
my $rvalue = Venus::Array->new;

my $result = $lvalue->lt($rvalue);

# 1

The ne method performs a "not-equal-to" operation using the argument provided.

ne(any $arg) (boolean)

{ since => '0.08', }

=example-1 ne

package main;

use Venus::Array;
use Venus::Undef;

my $lvalue = Venus::Undef->new;
my $rvalue = Venus::Array->new;

my $result = $lvalue->ne($rvalue);

# 1

The numified method returns the numerical representation of the object. For undef objects this method returns 0.

numified() (number)

{ since => '0.08', }

=example-1 numified

# given: synopsis;

my $numified = $undef->numified;

# 0

The stringified method always method returns ''.

stringified() (string)

{ since => '0.08', }

=example-1 stringified

# given: synopsis;

my $stringified = $undef->stringified;

# ""

The tv method performs a "type-and-value-equal-to" operation using argument provided.

tv(any $arg) (boolean)

{ since => '0.08', }

=example-1 tv

package main;

use Venus::Array;
use Venus::Undef;

my $lvalue = Venus::Undef->new;
my $rvalue = Venus::Array->new;

my $result = $lvalue->tv($rvalue);

# 0

t/Venus.t: present: authors t/Venus.t: present: license

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