NAME
Mojo::Collection - Collection
SYNOPSIS
# Manipulate collections
use Mojo::Collection;
my $collection = Mojo::Collection->new(qw(just works));
unshift @$collection, 'it';
$collection->map(sub { ucfirst })->each(sub {
my ($word, $count) = @_;
say "$count: $word";
});
# Use the alternative constructor
use Mojo::Collection 'c';
c(qw(a b c))->join('/')->url_escape->say;DESCRIPTION
Mojo::Collection is a container for collections.
FUNCTIONS
Mojo::Collection implements the following functions.
c
my $collection = c(1, 2, 3);Construct a new array-based Mojo::Collection object.
METHODS
Mojo::Collection inherits all methods from Mojo::Base and implements the following new ones.
new
my $collection = Mojo::Collection->new(1, 2, 3);Construct a new array-based Mojo::Collection object.
each
my @elements = $collection->each;
$collection = $collection->each(sub {...});Evaluate callback for each element in collection.
$collection->each(sub {
my ($e, $count) = @_;
say "$count: $e";
});first
my $first = $collection->first;
my $first = $collection->first(qr/foo/);
my $first = $collection->first(sub {...});Evaluate regular expression or callback for each element in collection and return the first one that matched the regular expression, or for which the callback returned true.
my $five = $collection->first(sub { $_ == 5 });grep
my $new = $collection->grep(qr/foo/);
my $new = $collection->grep(sub {...});Evaluate regular expression or callback for each element in collection and create a new collection with all elements that matched the regular expression, or for which the callback returned true.
my $interesting = $collection->grep(qr/mojo/i);join
my $stream = $collection->join("\n");Turn collection into Mojo::ByteStream.
$collection->join("\n")->say;map
my $new = $collection->map(sub {...});Evaluate callback for each element in collection and create a new collection from the results.
my $doubled = $collection->map(sub { $_ * 2 });pluck
my $new = $collection->pluck($method);
my $new = $collection->pluck($method, @args);Call method on each element in collection and create a new collection from the results.
# Equal to but more convenient than
my $new = $collection->map(sub { $_->$method(@args) });reverse
my $new = $collection->reverse;Create a new collection with all elements in reverse order.
slice
my $new = $collection->slice(4 .. 7);Create a new collection with all selected elements.
shuffle
my $new = $collection->shuffle;Create a new collection with all elements in random order.
size
my $size = $collection->size;Number of elements in collection.
sort
my $new = $collection->sort;
my $new = $collection->sort(sub {...});Sort elements based on return value of callback and create a new collection from the results.
my $insensitive = $collection->sort(sub { uc(shift) cmp uc(shift) });uniq
my $new = $collection->uniq;Create a new collection without duplicate elements.
ELEMENTS
Direct array reference access to elements is also possible.
say $collection->[23];
say for @$collection;