NAME

Venus::Array - Array Class

ABSTRACT

Array Class for Perl 5

SYNOPSIS

package main;

use Venus::Array;

my $array = Venus::Array->new([1..9]);

# $array->random;

DESCRIPTION

This package provides methods for manipulating array data.

INHERITS

This package inherits behaviors from:

Venus::Kind::Value

INTEGRATES

This package integrates behaviors from:

Venus::Role::Mappable

METHODS

This package provides the following methods:

all

all(CodeRef $code) (Bool)

The all method returns true if the callback returns true for all of the elements.

Since 0.01

all example 1

# given: synopsis;

my $all = $array->all(sub {
  $_ > 0;
});

# 1

all example 2

# given: synopsis;

my $all = $array->all(sub {
  my ($key, $value) = @_;

  $value > 0;
});

# 1

any

any(CodeRef $code) (Bool)

The any method returns true if the callback returns true for any of the elements.

Since 0.01

any example 1

# given: synopsis;

my $any = $array->any(sub {
  $_ > 4;
});

any example 2

# given: synopsis;

my $any = $array->any(sub {
  my ($key, $value) = @_;

  $value > 4;
});

count

count() (Int)

The count method returns the number of elements within the array.

Since 0.01

count example 1

# given: synopsis;

my $count = $array->count;

# 9

default

default() (ArrayRef)

The default method returns the default value, i.e. [].

Since 0.01

default example 1

# given: synopsis;

my $default = $array->default;

# []

delete

delete(Int $index) (Any)

The delete method returns the value of the element at the index specified after removing it from the array.

Since 0.01

delete example 1

# given: synopsis;

my $delete = $array->delete(2);

# 3

each

each(CodeRef $code) (ArrayRef)

The each method executes a callback for each element in the array passing the index and value as arguments. This method can return a list of values in list-context.

Since 0.01

each example 1

# given: synopsis;

my $each = $array->each(sub {
  [$_]
});

# [[1], [2], [3], [4], [5], [6], [7], [8], [9]]

each example 2

# given: synopsis;

my $each = $array->each(sub {
  my ($key, $value) = @_;

  [$key, $value]
});

# [
#   [0, 1],
#   [1, 2],
#   [2, 3],
#   [3, 4],
#   [4, 5],
#   [5, 6],
#   [6, 7],
#   [7, 8],
#   [8, 9],
# ]

empty

empty() (Array)

The empty method drops all elements from the array.

Since 0.01

empty example 1

# given: synopsis;

my $empty = $array->empty;

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

exists

exists(Int $index) (Bool)

The exists method returns true if the element at the index specified exists, otherwise it returns false.

Since 0.01

exists example 1

# given: synopsis;

my $exists = $array->exists(0);

# 1

find

find(Str @keys) (Any)

The find method traverses the data structure using the keys and indices provided, returning the value found or undef. In list-context, this method returns a tuple, i.e. the value found and boolean representing whether the match was successful.

Since 0.01

find example 1

package main;

use Venus::Array;

my $array = Venus::Array->new([{'foo' => {'bar' => 'baz'}}, 'bar', ['baz']]);

my $find = $array->find(0, 'foo');

# { bar => "baz" }

find example 2

package main;

use Venus::Array;

my $array = Venus::Array->new([{'foo' => {'bar' => 'baz'}}, 'bar', ['baz']]);

my $find = $array->find(0, 'foo', 'bar');

# "baz"

find example 3

package main;

use Venus::Array;

my $array = Venus::Array->new([{'foo' => {'bar' => 'baz'}}, 'bar', ['baz']]);

my $find = $array->find(2, 0);

# "baz"

first

first() (Any)

The first method returns the value of the first element.

Since 0.01

first example 1

# given: synopsis;

my $first = $array->first;

# 1

grep

grep(CodeRef $code) (ArrayRef)

The grep method executes a callback for each element in the array passing the value as an argument, returning a new array reference containing the elements for which the returned true. This method can return a list of values in list-context.

Since 0.01

grep example 1

# given: synopsis;

my $grep = $array->grep(sub {
  $_ > 3
});

# [4..9]

grep example 2

# given: synopsis;

my $grep = $array->grep(sub {
  my ($key, $value) = @_;

  $value > 3
});

# [4..9]

iterator

iterator() (CodeRef)

The iterator method returns a code reference which can be used to iterate over the array. Each time the iterator is executed it will return the next element in the array until all elements have been seen, at which point the iterator will return an undefined value. This method can return a tuple with the key and value in list-context.

Since 0.01

iterator example 1

# given: synopsis;

my $iterator = $array->iterator;

# sub { ... }

# while (my $value = $iterator->()) {
#   say $value; # 1
# }

iterator example 2

# given: synopsis;

my $iterator = $array->iterator;

# sub { ... }

# while (grep defined, my ($key, $value) = $iterator->()) {
#   say $value; # 1
# }

join

join(Str $seperator) (Str)

The join method returns a string consisting of all the elements in the array joined by the join-string specified by the argument. Note: If the argument is omitted, an empty string will be used as the join-string.

Since 0.01

join example 1

# given: synopsis;

my $join = $array->join;

# 123456789

join example 2

# given: synopsis;

my $join = $array->join(', ');

# "1, 2, 3, 4, 5, 6, 7, 8, 9"

keyed

keyed(Str @keys) (HashRef)

The keyed method returns a hash reference where the arguments become the keys, and the elements of the array become the values.

Since 0.01

keyed example 1

package main;

use Venus::Array;

my $array = Venus::Array->new([1..4]);

my $keyed = $array->keyed('a'..'d');

# { a => 1, b => 2, c => 3, d => 4 }

keys

keys() (ArrayRef)

The keys method returns an array reference consisting of the indicies of the array.

Since 0.01

keys example 1

# given: synopsis;

my $keys = $array->keys;

# [0..8]

last

last() (Any)

The last method returns the value of the last element in the array.

Since 0.01

last example 1

# given: synopsis;

my $last = $array->last;

# 9

list

list() (Any)

The list method returns a shallow copy of the underlying array reference as an array reference.

Since 0.01

list example 1

# given: synopsis;

my $list = $array->list;

# 9

list example 2

# given: synopsis;

my @list = $array->list;

# (1..9)

map

map(CodeRef $code) (ArrayRef)

The map method iterates over each element in the array, executing the code reference supplied in the argument, passing the routine the value at the current position in the loop and returning a new array reference containing the elements for which the argument returns a value or non-empty list. This method can return a list of values in list-context.

Since 0.01

map example 1

# given: synopsis;

my $map = $array->map(sub {
  $_ * 2
});

# [2, 4, 6, 8, 10, 12, 14, 16, 18]

map example 2

# given: synopsis;

my $map = $array->map(sub {
  my ($key, $value) = @_;

  [$key, ($value * 2)]
});

# [
#   [0, 2],
#   [1, 4],
#   [2, 6],
#   [3, 8],
#   [4, 10],
#   [5, 12],
#   [6, 14],
#   [7, 16],
#   [8, 18],
# ]

none

none(CodeRef $code) (Bool)

The none method returns true if none of the elements in the array meet the criteria set by the operand and rvalue.

Since 0.01

none example 1

# given: synopsis;

my $none = $array->none(sub {
  $_ < 1
});

# 1

none example 2

# given: synopsis;

my $none = $array->none(sub {
  my ($key, $value) = @_;

  $value < 1
});

# 1

one

one(CodeRef $code) (Bool)

The one method returns true if only one of the elements in the array meet the criteria set by the operand and rvalue.

Since 0.01

one example 1

# given: synopsis;

my $one = $array->one(sub {
  $_ == 1
});

# 1

one example 2

# given: synopsis;

my $one = $array->one(sub {
  my ($key, $value) = @_;

  $value == 1
});

# 1

pairs

pairs() (ArrayRef)

The pairs method is an alias to the pairs_array method. This method can return a list of values in list-context.

Since 0.01

pairs example 1

# given: synopsis;

my $pairs = $array->pairs;

# [
#   [0, 1],
#   [1, 2],
#   [2, 3],
#   [3, 4],
#   [4, 5],
#   [5, 6],
#   [6, 7],
#   [7, 8],
#   [8, 9],
# ]

part

part(CodeRef $code) (Tuple[ArrayRef, ArrayRef])

The part method iterates over each element in the array, executing the code reference supplied in the argument, using the result of the code reference to partition to array into two distinct array references. This method can return a list of values in list-context.

Since 0.01

part example 1

# given: synopsis;

my $part = $array->part(sub {
  $_ > 5
});

# [[6..9], [1..5]]

part example 2

# given: synopsis;

my $part = $array->part(sub {
  my ($key, $value) = @_;

  $value < 5
});

# [[1..4], [5..9]]

path

path(Str $expr) (Any)

The path method traverses the data structure using the path expr provided, returning the value found or undef. In list-context, this method returns a tuple, i.e. the value found and boolean representing whether the match was successful.

Since 0.01

path example 1

package main;

use Venus::Array;

my $array = Venus::Array->new([{'foo' => {'bar' => 'baz'}}, 'bar', ['baz']]);

my $path = $array->path('/0/foo');

# { bar => "baz" }

path example 2

package main;

use Venus::Array;

my $array = Venus::Array->new([{'foo' => {'bar' => 'baz'}}, 'bar', ['baz']]);

my $path = $array->path('/0/foo/bar');

# "baz"

path example 3

package main;

use Venus::Array;

my $array = Venus::Array->new([{'foo' => {'bar' => 'baz'}}, 'bar', ['baz']]);

my $path = $array->path('/2/0');

# "baz"

path example 4

package main;

use Venus::Array;

my $array = Venus::Array->new([{'foo' => {'bar' => 'baz'}}, 'bar', ['baz']]);

my @path = $array->path('/3/0');

# (undef, 0)

pop

pop() (Any)

The pop method returns the last element of the array shortening it by one. Note, this method modifies the array.

Since 0.01

pop example 1

# given: synopsis;

my $pop = $array->pop;

# 9

push

push(Any @data) (ArrayRef)

The push method appends the array by pushing the agruments onto it and returns itself.

Since 0.01

push example 1

# given: synopsis;

my $push = $array->push(10);

# [1..10]

random

random() (Any)

The random method returns a random element from the array.

Since 0.01

random example 1

# given: synopsis;

my $random = $array->random;

# 2

# my $random = $array->random;

# 1

reverse

reverse() (ArrayRef)

The reverse method returns an array reference containing the elements in the array in reverse order.

Since 0.01

reverse example 1

# given: synopsis;

my $reverse = $array->reverse;

# [9, 8, 7, 6, 5, 4, 3, 2, 1]

rotate

rotate() (ArrayRef)

The rotate method rotates the elements in the array such that first elements becomes the last element and the second element becomes the first element each time this method is called.

Since 0.01

rotate example 1

# given: synopsis;

my $rotate = $array->rotate;

# [2..9, 1]

rsort

rsort() (ArrayRef)

The rsort method returns an array reference containing the values in the array sorted alphanumerically in reverse.

Since 0.01

rsort example 1

# given: synopsis;

my $rsort = $array->rsort;

# [9, 8, 7, 6, 5, 4, 3, 2, 1]

shift

shift() (Any)

The shift method returns the first element of the array shortening it by one.

Since 0.01

shift example 1

# given: synopsis;

my $shift = $array->shift;

# 1

slice

slice(Str @keys) (ArrayRef)

The slice method returns a hash reference containing the elements in the array at the index(es) specified in the arguments.

Since 0.01

slice example 1

# given: synopsis;

my $slice = $array->slice(2, 4);

# [3, 5]

sort

sort() (ArrayRef)

The sort method returns an array reference containing the values in the array sorted alphanumerically.

Since 0.01

sort example 1

package main;

use Venus::Array;

my $array = Venus::Array->new(['d','c','b','a']);

my $sort = $array->sort;

# ["a".."d"]

unique

unique() (ArrayRef)

The unique method returns an array reference consisting of the unique elements in the array.

Since 0.01

unique example 1

package main;

use Venus::Array;

my $array = Venus::Array->new([1,1,1,1,2,3,1]);

my $unique = $array->unique;

# [1, 2, 3]

unshift

unshift(Any @data) (ArrayRef)

The unshift method prepends the array by pushing the agruments onto it and returns itself.

Since 0.01

unshift example 1

# given: synopsis;

my $unshift = $array->unshift(-2,-1,0);

# [-2..9]

AUTHORS

Cpanery, cpanery@cpan.org

LICENSE

Read the "license" file.

To install Venus, copy and paste the appropriate command in to your terminal.

cpanm

cpanm Venus

CPAN shell

perl -MCPAN -e shell
install Venus

For more information on module installation, please visit the detailed CPAN module installation guide.

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NAME

ABSTRACT

SYNOPSIS

DESCRIPTION

INHERITS

INTEGRATES

METHODS

all

any

count

default

delete

each

empty

exists

find

first

grep

iterator

join

keyed

keys

last

list

map

none

one

pairs

part

path

pop

push

random

reverse

rotate

rsort

shift

slice

sort

unique

unshift

AUTHORS

LICENSE

Module Install Instructions