DBIx::MoCo::List - Array iterator for DBIx::MoCo.
my $array_ref = [ {name => 'jkondo'}, {name => 'cinnamon'} ]; my $list = DBIx::MoCo::List->new($array_ref); $list->size; #=> 2 my $first = $list->shift; #=> {name => 'jkondo'} $list->push($first); #=> [{name => 'cinnamon'}, {name => 'jkondo'}]; # DBIx::MoCo::List provides much more useful methods. For more # details, see the sections below.
Dump the content of $self using Data::Dumper.
$self
Sets the argument into $self, a refernce to an array blessed by DBIx::MoCo::List, like the same name functions provided by Perl core, then returns a DBIx::MoCo::List object.
my $list = DBIx::MoCo::List->new([qw(1 2 3)]); $list->push(4, 5); #=> [1, 2, 3, 4, 5] $list->unshift(0); #=> [0, 1, 2, 3, 4, 5]
They're almost the same as push()/unshift() described above except that the argument shoud be a reference to an array.
push()
unshift()
my $list = DBIx::MoCo::List->new([1, 2, 3]); $list->concat([4, 5]); #=> [1, 2, 3, 4, 5] $list->prepend([0]); #=> [0, 1, 2, 3, 4, 5]
Pulls out the first/last element from $self, a refernce to an array blessed by DBIx::MoCo::List, then returns it like the same name functions in Perl core.
$list = DBIx::MoCo::List->new([1, 2, 3]); $list->shift; #=> 1 $list->pop; #=> 3 $list->dump #=> [2]
Returns the first/last element of $self, a refernce to an array blessed by DBIx::MoCo::List. These methods aren't destructive contrary to shift()/pop() method.
shift()
pop()
$list = DBIx::MoCo::List->new([1, 2, 3]); $list->first; #=> 1 $list->last; #=> 3 $list->dump #=> [1, 2, 3]
Returns the elements whose indexes are between $start and $end as a DBIx::MoCo::List object.
$start
$end
$list = DBIx::MoCo::List->new([qw(1 2 3 4)]); $list->slice(1, 2) #=> [2, 3]
Bundles up the elements in each arguments into an array or a DBIx::MoCo::List object along with the context.
my $list = DBIx::MoCo::List->new([1, 2, 3]); $list->zip([4, 5, 6], [7, 8, 9]); #=> [[1, 4, 7], [2, 5, 8], [3, 6, 9]] # When the numbers of each list are different... $list = DBIx::MoCo::List->new([1, 2, 3]); $list->zip([4, 5], [7, 8, 9]); #=> [[1, 4, 7], [2, 5, 8], [3, undef, 9]] my $list = DBIx::MoCo::List->new([1, 2]); $list->zip([4, 5], [7, 8, 9]); #=> [[1, 4, 7], [2, 5, 8]]
Deletes the same values as $value in $self, a refernce to an array blessed by DBIx::MoCo::List, and returns the value if found. If the value is not found in $self and $code is passed in, the code is executed using the value as an argument to find the value to be deleted.
$value
$code
$list = DBIx::MoCo::List->new([1, 2, 3, 2, 1]); $list->delete(2); #=> 2 $list->dump #=> [1, 3, 1]
Deletes the element at $pos and returns it.
$pos
$list = DBIx::MoCo::List->new([1, 2, 3, 2, 1]); $list->delete_at(3); #=> 2 $list->dump #=> [1, 2, 3, 1]
Deletes the elements if $code returns false value with each element as an argument.
$list = DBIx::MoCo::List->new([1, 2, 3, 4]); $list->delete_if(sub { ($_ % 2) == 0) }); $list->dump #=> [2, 4]
Executes folding calculation using $code through each element and returns the result.
$list = DBIx::MoCo::List->new([1, 2, 3, 4]); $list->inject(0, sub { $_[0] + $_[1] }); #=> 10
Joins all the elements by $delimiter.
$delimiter
$list = DBIx::MoCo::List->new([0 1 2 3]); $list->join(', ') #=> '0, 1, 2, 3'
Executes $code with each index of $self, a refernce to an array blessed by DBIx::MoCo::List.
$list = DBIx::MoCo::List->new([1, 2, 3]); $list->each_index(sub { do_something($_) });
Executes $code with each value of $self, a refernce to an array blessed by DBIx::MoCo::List.
$list = DBIx::MoCo::List->new([1, 2, 3]); $list->each(sub { do_something($_) });
Executes $code with each element of $self, a refernce to an array blessed by DBIx::MoCo::List using CORE::map() and returns the results as a list or DBIx::MoCo:List object along with the context.
$list = DBIx::MoCo::List->new([1, 2, 3]); $list->map(sub { $_ * 2 }); #=> [2, 4, 6]
An alias of collect() method described above.
collect()
Executes $code with each element of $self, a refernce to an array blessed by DBIx::MoCo::List using CORE::grep() and returns the results as a list or DBIx::MoCo:List object along with the context.
$list = DBIx::MoCo::List->new([qw(1 2 3 4)]); $list->grep(sub { ($_ % 2) == 0 }); #=> [2, 4]
Returns the first value found in $self, a refernce to an array blessed by DBIx::MoCo::List, as a result of $code..
$list = DBIx::MoCo::List->new([1, 2, 3, 4]); $list->find(sub { ($_ % 2) == 0 }); #=> 2
Returns index of given target or given code returns true.
$list = DBIx::MoCo::List->new([qw(foo bar baz)]); $list->index_of('bar'); #=> 1 $list->index_of(sub { shift eq 'bar' }); #=> 1
Sorts out each element and returns the result as a list or DBIx::MoCo:List object along with the context.
$list = DBIx::MoCo::List->new([qw(3 2 4 1]); $list->sort; #=> [1, 2, 3, 4] $list->sort(sub { $_[1] <=> $_[0] }); #=> [4, 3, 2, 1]
Eliminates undefined values in $self, a refernce to an array blessed by DBIx::MoCo::List.
$list = DBIx::MoCo::List->new([1, 2, undef, 3, undef, 4]); $list->compact; #=> [1, 2, 3, 4]
Returns the length of $self, a refernce to an array blessed by DBIx::MoCo::List.
$list = DBIx::MoCo::List->new([qw(1 2 3 4)]); $list->length; #=> 4
An alias of length() method described above.
length()
Returns a list or DBIx::MoCo::List object which is recursively flattened out.
$list = DBIx::MoCo::List->new([1, [2, 3, [4], 5]]); $list->flattern; #=> [1, 2, 3, 4, 5]
Returns true if $self, a refernce to an array blessed by DBIx::MoCo::List, is empty.
Uniquifies the elements in $self, a refernce to an array blessed by DBIx::MoCo::List, and returns the result.
$list = DBIx::MoCo::List->new([1, 2, 2, 3, 3, 4]) $list->uniq; #=> [1, 2, 3, 4]
Reduces the list by $code.
# finds the maximum value $list = DBIx::MoCo::List->new([4, 1, 3, 2]) $list->reduce(sub { $_[0] > $_[1] ? $_[0] : $_[1] }); #=> 4
See List::Util to get to know about details of reduce().
reduce()
Returns an reversely ordered $self, a refernce to an array blessed by DBIx::MoCo::List.
$list = DBIx::MoCo::List->new([4, 1, 3, 2]) $list->reverse; #=> [2, 3, 1, 4]
Returns a duplicated $self, a refernce to an array blessed by DBIx::MoCo::List.
Returns the sum of each element in $self, a refernce to an array blessed by DBIx::MoCo::List.
$list = DBIx::MoCo::List->new([1, 2, 3, 4]); $list->sum; #=> 10
Returns the results of XXX() method of each elements as a list or a DBIx::MoCo::List object along with the context.
XXX()
my $list = Your::MoCo::Class->retrieve_all; my $names = $list->map_name;
In this case, $names is a list of the return values of name() method of each element in $list.
$names
name()
$list
DBIx::MoCo, List::Util, List::MoreUtils
Junya Kondo, <jkondo@hatena.com>, Naoya Ito, <naoya@hatena.ne.jp>, Kentaro Kuribayashi, <kentarok@gmail.com>
Copyright (C) Hatena Inc. All Rights Reserved.
This library is free software; you may redistribute it and/or modify it under the same terms as Perl itself.
To install DBIx::MoCo, copy and paste the appropriate command in to your terminal.
cpanm
cpanm DBIx::MoCo
CPAN shell
perl -MCPAN -e shell install DBIx::MoCo
For more information on module installation, please visit the detailed CPAN module installation guide.