NAME

Venus::Boolean - Boolean Class

ABSTRACT

Boolean Class for Perl 5

SYNOPSIS

package main;

use Venus::Boolean;

my $boolean = Venus::Boolean->new;

# $boolean->negate;

DESCRIPTION

This package provides a representation for boolean values.

INHERITS

This package inherits behaviors from:

Venus::Kind::Value

METHODS

This package provides the following methods:

cast

cast(Str $kind) (Object | Undef)

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.

Since 0.08

cast example 1

package main;

use Venus::Boolean;

my $boolean = Venus::Boolean->new;

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

# bless({ value => [0] }, "Venus::Array")

cast example 2

package main;

use Venus::Boolean;

my $boolean = Venus::Boolean->new;

my $cast = $boolean->cast('boolean');

# bless({ value => 0 }, "Venus::Boolean")

cast example 3

package main;

use Venus::Boolean;

my $boolean = Venus::Boolean->new;

my $cast = $boolean->cast('code');

# bless({ value => sub { ... } }, "Venus::Code")

cast example 4

package main;

use Venus::Boolean;

my $boolean = Venus::Boolean->new;

my $cast = $boolean->cast('float');

# bless({ value => "0.0" }, "Venus::Float")

cast example 5

package main;

use Venus::Boolean;

my $boolean = Venus::Boolean->new;

my $cast = $boolean->cast('hash');

# bless({ value => { "0" => 0 } }, "Venus::Hash")

cast example 6

package main;

use Venus::Boolean;

my $boolean = Venus::Boolean->new;

my $cast = $boolean->cast('number');

# bless({ value => 0 }, "Venus::Number")

cast example 7

package main;

use Venus::Boolean;

my $boolean = Venus::Boolean->new;

my $cast = $boolean->cast('regexp');

# bless({ value => qr/(?^u:0)/ }, "Venus::Regexp")

cast example 8

package main;

use Venus::Boolean;

my $boolean = Venus::Boolean->new;

my $cast = $boolean->cast('scalar');

# bless({ value => \0 }, "Venus::Scalar")

cast example 9

package main;

use Venus::Boolean;

my $boolean = Venus::Boolean->new;

my $cast = $boolean->cast('string');

# bless({ value => 0 }, "Venus::String")

cast example 10

package main;

use Venus::Boolean;

my $boolean = Venus::Boolean->new;

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

# bless({ value => undef }, "Venus::Undef")

default

default() (Bool)

The default method returns the default value, i.e. 0.

Since 0.01

default example 1

# given: synopsis;

my $default = $boolean->default;

# 0

eq

eq(Any $arg) (Bool)

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

Since 0.08

eq example 1

package main;

use Venus::Array;
use Venus::Boolean;

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

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

# 0

eq example 2

package main;

use Venus::Boolean;

my $lvalue = Venus::Boolean->new;
my $rvalue = Venus::Boolean->new;

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

# 1

eq example 3

package main;

use Venus::Code;
use Venus::Boolean;

my $lvalue = Venus::Boolean->new;
my $rvalue = Venus::Code->new;

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

# 0

eq example 4

package main;

use Venus::Float;
use Venus::Boolean;

my $lvalue = Venus::Boolean->new;
my $rvalue = Venus::Float->new;

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

# 1

eq example 5

package main;

use Venus::Hash;
use Venus::Boolean;

my $lvalue = Venus::Boolean->new;
my $rvalue = Venus::Hash->new;

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

# 0

eq example 6

package main;

use Venus::Boolean;
use Venus::Number;

my $lvalue = Venus::Boolean->new;
my $rvalue = Venus::Number->new;

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

# 1

eq example 7

package main;

use Venus::Boolean;
use Venus::Regexp;

my $lvalue = Venus::Boolean->new;
my $rvalue = Venus::Regexp->new;

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

# 0

eq example 8

package main;

use Venus::Boolean;
use Venus::Scalar;

my $lvalue = Venus::Boolean->new;
my $rvalue = Venus::Scalar->new;

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

# 0

eq example 9

package main;

use Venus::Boolean;
use Venus::String;

my $lvalue = Venus::Boolean->new;
my $rvalue = Venus::String->new;

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

# 1

eq example 10

package main;

use Venus::Boolean;
use Venus::Undef;

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

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

# 1

ge

ge(Any $arg) (Bool)

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

Since 0.08

ge example 1

package main;

use Venus::Array;
use Venus::Boolean;

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

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

# 0

ge example 2

package main;

use Venus::Boolean;

my $lvalue = Venus::Boolean->new;
my $rvalue = Venus::Boolean->new;

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

# 1

ge example 3

package main;

use Venus::Code;
use Venus::Boolean;

my $lvalue = Venus::Boolean->new;
my $rvalue = Venus::Code->new;

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

# 0

ge example 4

package main;

use Venus::Hash;
use Venus::Boolean;

my $lvalue = Venus::Boolean->new;
my $rvalue = Venus::Hash->new;

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

# 0

ge example 5

package main;

use Venus::Boolean;
use Venus::Number;

my $lvalue = Venus::Boolean->new;
my $rvalue = Venus::Number->new;

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

# 1

ge example 6

package main;

use Venus::Boolean;
use Venus::Regexp;

my $lvalue = Venus::Boolean->new;
my $rvalue = Venus::Regexp->new;

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

# 0

ge example 7

package main;

use Venus::Boolean;
use Venus::Scalar;

my $lvalue = Venus::Boolean->new;
my $rvalue = Venus::Scalar->new;

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

# 0

ge example 8

package main;

use Venus::Boolean;
use Venus::String;

my $lvalue = Venus::Boolean->new;
my $rvalue = Venus::String->new;

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

# 1

ge example 9

package main;

use Venus::Boolean;
use Venus::Undef;

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

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

# 1

gele

gele(Any $arg1, Any $arg2) (Bool)

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.

Since 0.08

gele example 1

package main;

use Venus::Array;
use Venus::Boolean;

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

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

# 0

gele example 2

package main;

use Venus::Boolean;

my $lvalue = Venus::Boolean->new;
my $rvalue = Venus::Boolean->new;

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

# 1

gele example 3

package main;

use Venus::Code;
use Venus::Boolean;

my $lvalue = Venus::Boolean->new;
my $rvalue = Venus::Code->new;

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

# 0

gele example 4

package main;

use Venus::Float;
use Venus::Boolean;

my $lvalue = Venus::Boolean->new;
my $rvalue = Venus::Number->new;

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

# 1

gele example 5

package main;

use Venus::Hash;
use Venus::Boolean;

my $lvalue = Venus::Boolean->new;
my $rvalue = Venus::Hash->new;

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

# 0

gele example 6

package main;

use Venus::Boolean;
use Venus::Number;

my $lvalue = Venus::Boolean->new;
my $rvalue = Venus::Number->new;

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

# 1

gele example 7

package main;

use Venus::Boolean;
use Venus::Regexp;

my $lvalue = Venus::Boolean->new;
my $rvalue = Venus::Regexp->new;

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

# 0

gele example 8

package main;

use Venus::Boolean;
use Venus::Scalar;

my $lvalue = Venus::Boolean->new;
my $rvalue = Venus::Scalar->new;

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

# 0

gele example 9

package main;

use Venus::Boolean;
use Venus::String;

my $lvalue = Venus::Boolean->new;
my $rvalue = Venus::String->new;

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

# 1

gele example 10

package main;

use Venus::Boolean;
use Venus::Undef;

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

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

# 1

gt

gt(Any $arg) (Bool)

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

Since 0.08

gt example 1

package main;

use Venus::Array;
use Venus::Boolean;

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

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

# 0

gt example 2

package main;

use Venus::Boolean;

my $lvalue = Venus::Boolean->new;
my $rvalue = Venus::Boolean->new;

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

# 0

gt example 3

package main;

use Venus::Code;
use Venus::Boolean;

my $lvalue = Venus::Boolean->new;
my $rvalue = Venus::Code->new;

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

# 0

gt example 4

package main;

use Venus::Float;
use Venus::Boolean;

my $lvalue = Venus::Boolean->new;
my $rvalue = Venus::Float->new;

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

# 0

gt example 5

package main;

use Venus::Hash;
use Venus::Boolean;

my $lvalue = Venus::Boolean->new;
my $rvalue = Venus::Hash->new;

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

# 0

gt example 6

package main;

use Venus::Boolean;
use Venus::Number;

my $lvalue = Venus::Boolean->new;
my $rvalue = Venus::Number->new;

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

# 0

gt example 7

package main;

use Venus::Boolean;
use Venus::Regexp;

my $lvalue = Venus::Boolean->new;
my $rvalue = Venus::Regexp->new;

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

# 0

gt example 8

package main;

use Venus::Boolean;
use Venus::Scalar;

my $lvalue = Venus::Boolean->new;
my $rvalue = Venus::Scalar->new;

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

# 0

gt example 9

package main;

use Venus::Boolean;
use Venus::String;

my $lvalue = Venus::Boolean->new;
my $rvalue = Venus::String->new;

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

# 0

gt example 10

package main;

use Venus::Boolean;
use Venus::Undef;

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

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

# 0

gtlt

gtlt(Any $arg1, Any $arg2) (Bool)

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

Since 0.08

gtlt example 1

package main;

use Venus::Array;
use Venus::Boolean;

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

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

# 0

gtlt example 2

package main;

use Venus::Boolean;

my $lvalue = Venus::Boolean->new;
my $rvalue = Venus::Boolean->new;

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

# 0

gtlt example 3

package main;

use Venus::Code;
use Venus::Boolean;

my $lvalue = Venus::Boolean->new;
my $rvalue = Venus::Code->new;

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

# 0

gtlt example 4

package main;

use Venus::Float;
use Venus::Boolean;

my $lvalue = Venus::Boolean->new;
my $rvalue = Venus::Float->new;

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

# 0

gtlt example 5

package main;

use Venus::Hash;
use Venus::Boolean;

my $lvalue = Venus::Boolean->new;
my $rvalue = Venus::Hash->new;

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

# 0

gtlt example 6

package main;

use Venus::Boolean;
use Venus::Number;

my $lvalue = Venus::Boolean->new;
my $rvalue = Venus::Number->new;

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

# 0

gtlt example 7

package main;

use Venus::Boolean;
use Venus::Regexp;

my $lvalue = Venus::Boolean->new;
my $rvalue = Venus::Regexp->new;

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

# 0

gtlt example 8

package main;

use Venus::Boolean;
use Venus::Scalar;

my $lvalue = Venus::Boolean->new;
my $rvalue = Venus::Scalar->new;

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

# 0

gtlt example 9

package main;

use Venus::Boolean;
use Venus::String;

my $lvalue = Venus::Boolean->new;
my $rvalue = Venus::String->new;

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

# 0

gtlt example 10

package main;

use Venus::Boolean;
use Venus::Undef;

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

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

# 0

is_false

is_false() (Bool)

The is_false method returns false if the boolean is falsy, otherwise returns true.

Since 0.01

is_false example 1

# given: synopsis;

my $is_false = $boolean->is_false;

# 1

is_true

is_true() (Bool)

The is_true method returns true if the boolean is truthy, otherwise returns false.

Since 0.01

is_true example 1

# given: synopsis;

my $is_true = $boolean->is_true;

# 0

le

le(Any $arg) (Bool)

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

Since 0.08

le example 1

package main;

use Venus::Array;
use Venus::Boolean;

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

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

# 1

le example 2

package main;

use Venus::Boolean;

my $lvalue = Venus::Boolean->new;
my $rvalue = Venus::Boolean->new;

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

# 1

le example 3

package main;

use Venus::Code;
use Venus::Boolean;

my $lvalue = Venus::Boolean->new;
my $rvalue = Venus::Code->new;

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

# 1

le example 4

package main;

use Venus::Float;
use Venus::Boolean;

my $lvalue = Venus::Boolean->new;
my $rvalue = Venus::Float->new;

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

# 1

le example 5

package main;

use Venus::Hash;
use Venus::Boolean;

my $lvalue = Venus::Boolean->new;
my $rvalue = Venus::Hash->new;

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

# 1

le example 6

package main;

use Venus::Boolean;
use Venus::Number;

my $lvalue = Venus::Boolean->new;
my $rvalue = Venus::Number->new;

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

# 1

le example 7

package main;

use Venus::Boolean;
use Venus::Regexp;

my $lvalue = Venus::Boolean->new;
my $rvalue = Venus::Regexp->new;

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

# 1

le example 8

package main;

use Venus::Boolean;
use Venus::Scalar;

my $lvalue = Venus::Boolean->new;
my $rvalue = Venus::Scalar->new;

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

# 1

le example 9

package main;

use Venus::Boolean;
use Venus::String;

my $lvalue = Venus::Boolean->new;
my $rvalue = Venus::String->new;

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

# 1

le example 10

package main;

use Venus::Boolean;
use Venus::Undef;

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

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

# 1

lt

lt(Any $arg) (Bool)

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

Since 0.08

lt example 1

package main;

use Venus::Array;
use Venus::Boolean;

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

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

# 1

lt example 2

package main;

use Venus::Boolean;

my $lvalue = Venus::Boolean->new;
my $rvalue = Venus::Boolean->new;

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

# 0

lt example 3

package main;

use Venus::Code;
use Venus::Boolean;

my $lvalue = Venus::Boolean->new;
my $rvalue = Venus::Code->new;

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

# 1

lt example 4

package main;

use Venus::Float;
use Venus::Boolean;

my $lvalue = Venus::Boolean->new;
my $rvalue = Venus::Float->new;

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

# 0

lt example 5

package main;

use Venus::Hash;
use Venus::Boolean;

my $lvalue = Venus::Boolean->new;
my $rvalue = Venus::Hash->new;

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

# 1

lt example 6

package main;

use Venus::Boolean;
use Venus::Number;

my $lvalue = Venus::Boolean->new;
my $rvalue = Venus::Number->new;

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

# 0

lt example 7

package main;

use Venus::Boolean;
use Venus::Regexp;

my $lvalue = Venus::Boolean->new;
my $rvalue = Venus::Regexp->new;

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

# 1

lt example 8

package main;

use Venus::Boolean;
use Venus::Scalar;

my $lvalue = Venus::Boolean->new;
my $rvalue = Venus::Scalar->new;

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

# 1

lt example 9

package main;

use Venus::Boolean;
use Venus::String;

my $lvalue = Venus::Boolean->new;
my $rvalue = Venus::String->new;

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

# 0

lt example 10

package main;

use Venus::Boolean;
use Venus::Undef;

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

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

# 0

ne

ne(Any $arg) (Bool)

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

Since 0.08

ne example 1

package main;

use Venus::Array;
use Venus::Boolean;

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

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

# 1

ne example 2

package main;

use Venus::Boolean;

my $lvalue = Venus::Boolean->new;
my $rvalue = Venus::Boolean->new;

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

# 0

ne example 3

package main;

use Venus::Code;
use Venus::Boolean;

my $lvalue = Venus::Boolean->new;
my $rvalue = Venus::Code->new;

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

# 1

ne example 4

package main;

use Venus::Float;
use Venus::Boolean;

my $lvalue = Venus::Boolean->new;
my $rvalue = Venus::Float->new;

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

# 0

ne example 5

package main;

use Venus::Hash;
use Venus::Boolean;

my $lvalue = Venus::Boolean->new;
my $rvalue = Venus::Hash->new;

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

# 1

ne example 6

package main;

use Venus::Boolean;
use Venus::Number;

my $lvalue = Venus::Boolean->new;
my $rvalue = Venus::Number->new;

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

# 0

ne example 7

package main;

use Venus::Boolean;
use Venus::Regexp;

my $lvalue = Venus::Boolean->new;
my $rvalue = Venus::Regexp->new;

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

# 1

ne example 8

package main;

use Venus::Boolean;
use Venus::Scalar;

my $lvalue = Venus::Boolean->new;
my $rvalue = Venus::Scalar->new;

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

# 1

ne example 9

package main;

use Venus::Boolean;
use Venus::String;

my $lvalue = Venus::Boolean->new;
my $rvalue = Venus::String->new;

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

# 0

ne example 10

package main;

use Venus::Boolean;
use Venus::Undef;

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

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

# 0

negate

negate() (Bool)

The negate method returns true if the boolean is falsy, otherwise returns false.

Since 0.01

negate example 1

# given: synopsis;

my $negate = $boolean->negate;

# 1

numified

numified() (Int)

The numified method returns the numerical representation of the object.

Since 0.08

numified example 1

# given: synopsis;

my $numified = $boolean->numified;

# 1

numified example 2

package main;

use Venus::Boolean;

my $boolean = Venus::Boolean->new(0);

my $numified = $boolean->numified;

# 0

numified example 3

package main;

use Venus::Boolean;

my $boolean = Venus::Boolean->new(1);

my $numified = $boolean->numified;

# 1

string

string() (Str)

The string method returns the word 'true' if the boolean is truthy, otherwise returns 'false'. This method was formerly named "type".

Since 0.08

string example 1

# given: synopsis;

my $string = $boolean->string;

# "false"

tv

tv(Any $arg) (Bool)

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

Since 0.08

tv example 1

package main;

use Venus::Array;
use Venus::Boolean;

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

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

# 0

tv example 2

package main;

use Venus::Boolean;

my $lvalue = Venus::Boolean->new;
my $rvalue = Venus::Boolean->new;

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

# 1

tv example 3

package main;

use Venus::Code;
use Venus::Boolean;

my $lvalue = Venus::Boolean->new;
my $rvalue = Venus::Code->new;

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

# 0

tv example 4

package main;

use Venus::Float;
use Venus::Boolean;

my $lvalue = Venus::Boolean->new;
my $rvalue = Venus::Float->new;

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

# 0

tv example 5

package main;

use Venus::Hash;
use Venus::Boolean;

my $lvalue = Venus::Boolean->new;
my $rvalue = Venus::Hash->new;

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

# 0

tv example 6

package main;

use Venus::Boolean;
use Venus::Number;

my $lvalue = Venus::Boolean->new;
my $rvalue = Venus::Number->new;

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

# 0

tv example 7

package main;

use Venus::Boolean;
use Venus::Regexp;

my $lvalue = Venus::Boolean->new;
my $rvalue = Venus::Regexp->new;

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

# 0

tv example 8

package main;

use Venus::Boolean;
use Venus::Scalar;

my $lvalue = Venus::Boolean->new;
my $rvalue = Venus::Scalar->new;

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

# 0

tv example 9

package main;

use Venus::Boolean;
use Venus::String;

my $lvalue = Venus::Boolean->new;
my $rvalue = Venus::String->new;

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

# 0

tv example 10

package main;

use Venus::Boolean;
use Venus::Undef;

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

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

# 0

OPERATORS

This package overloads the following operators:

operation: (!)

This package overloads the ! operator.

example 1

# given: synopsis;

my $result = !$boolean;

# 1

operation: (<)

This package overloads the < operator.

example 1

# given: synopsis;

my $result = $boolean < 1;

# 1

operation: (<=)

This package overloads the <= operator.

example 1

# given: synopsis;

my $result = $boolean <= 0;

# 1

operation: (>)

This package overloads the > operator.

example 1

# given: synopsis;

my $result = $boolean > 0;

# 0

operation: (>=)

This package overloads the >= operator.

example 1

# given: synopsis;

my $result = $boolean >= 0;

# 1

operation: (!=)

This package overloads the != operator.

example 1

# given: synopsis;

my $result = $boolean != 1;

# 1

operation: (==)

This package overloads the == operator.

example 1

# given: synopsis;

my $result = $boolean == 0;

# 1

operation: (bool)

This package overloads the bool operator.

example 1

# given: synopsis;

my $result = !!$boolean;

# 0

operation: (eq)

This package overloads the eq operator.

example 1

# given: synopsis;

my $result = $boolean eq '0';

# 1

operation: (ne)

This package overloads the ne operator.

example 1

# given: synopsis;

my $result = $boolean ne '1';

# 1

operation: (qr)

This package overloads the qr operator.

example 1

# given: synopsis;

my $result = '0' =~ qr/$boolean/;

# 1

cpanm Venus

perl -MCPAN -e shell
install Venus