Mojo::Collection

c

  my $collection = c(1, 2, 3);

Construct a new array-based Mojo::Collection object.

TO_JSON

  my $array = $collection->TO_JSON;

Alias for "to_array".

compact

  my $new = $collection->compact;

Create a new collection with all elements that are defined and not an empty string.

  # "0, 1, 2, 3"
  Mojo::Collection->new(0, 1, undef, 2, '', 3)->compact->join(', ');

each

  my @elements = $collection->each;
  $collection  = $collection->each(sub {...});

Evaluate callback for each element in collection or return all elements as a list if none has been provided. The element will be the first argument passed to the callback and is also available as $_.

  # Make a numbered list
  $collection->each(sub {
    my ($e, $num) = @_;
    say "$num: $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. The element will be the first argument passed to the callback and is also available as $_.

  # Find first value that contains the word "mojo"
  my $interesting = $collection->first(qr/mojo/i);
  # Find first value that is greater than 5
  my $greater = $collection->first(sub { $_ > 5 });

flatten

  my $new = $collection->flatten;

Flatten nested collections/arrays recursively and create a new collection with all elements.

  # "1, 2, 3, 4, 5, 6, 7"
  Mojo::Collection->new(1, [2, [3, 4], 5, [6]], 7)->flatten->join(', ');

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. The element will be the first argument passed to the callback and is also available as $_.

  # Find all values that contain the word "mojo"
  my $interesting = $collection->grep(qr/mojo/i);
  # Find all values that are greater than 5
  my $greater = $collection->grep(sub { $_ > 5 });

join

  my $stream = $collection->join;
  my $stream = $collection->join("\n");

Turn collection into Mojo::ByteStream.

  # Join all values with commas
  $collection->join(', ')->say;

last

  my $last = $collection->last;

Return the last element in collection.

map

  my $new = $collection->map(sub {...});
  my $new = $collection->map($method);
  my $new = $collection->map($method, @args);

Evaluate callback for, or call method on, each element in collection and create a new collection from the results. The element will be the first argument passed to the callback and is also available as $_.

  # Longer version
  my $new = $collection->map(sub { $_->$method(@args) });
  # Append the word "mojo" to all values
  my $mojoified = $collection->map(sub { $_ . 'mojo' });

new

  my $collection = Mojo::Collection->new(1, 2, 3);

Construct a new array-based Mojo::Collection object.

reduce

  my $result = $collection->reduce(sub {...});
  my $result = $collection->reduce(sub {...}, $initial);

Reduce elements in collection with callback, the first element will be used as initial value if none has been provided.

  # Calculate the sum of all values
  my $sum = $collection->reduce(sub { $a + $b });
  # Count how often each value occurs in collection
  my $hash = $collection->reduce(sub { $a->{$b}++; $a }, {});

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.

  # "B C E"
  Mojo::Collection->new('A', 'B', 'C', 'D', 'E')->slice(1, 2, 4)->join(' ');

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.

  # Sort values case-insensitive
  my $case_insensitive = $collection->sort(sub { uc($a) cmp uc($b) });

tap

  $collection = $collection->tap(sub {...});

Alias for "tap" in Mojo::Base.

to_array

  my $array = $collection->to_array;

Turn collection into array reference.

uniq

  my $new = $collection->uniq;

Create a new collection without duplicate elements.

  # "foo bar baz"
  Mojo::Collection->new('foo', 'bar', 'bar', 'baz')->uniq->join(' ');