Include module Module ActiveSupport::CoreExtensions::Array::Grouping

[RichardOnRails]

I want to use the grouping method(s) from the subject module, but I
can't translate it address into a ruby include.

The module's documented at http://rails.rubyonrails.org/classes/ActiveSupport/CoreExtensions/Array/Grouping.html.

Thanks in Advance for any guidance offered.
Richard

 

[7stud --]

require "<your path to
here->/lib/active_support/core_ext/array/grouping"

Then you will have something like this at the top of your file:

module A
module B
module C

def in_group
puts "in_group"
end

end
end
end


Which means you can do this:

class MyClass
include A::B::C
end

MyClass.new.in_group

--output:--
in_group


I think that Grouping is defined as a "mixin" module--in other words it
is a module which contains regular def's inside it:

module ActiveSupport
module CoreExtension
module Array
module Grouping

def in_group
..
..
end

end
end
end
end


You can't create a module instance, like you can with a class. So you
are not able to create a Grouping instance:

obj = Grouping.new

and call the method using the instance:

obj.in_group

Rather mixin modules are created to be included by a class, and then the
defs in the module become defs in the class.

 

[7stud --]

Or, you can also do something like this:

module A
module B
module C

def in_group
puts 'in_group'
end

end
end
end


include A::B::C
in_group

include() at the top-level causes the defs in the module to be included
in the Object class, which means you can call in_group (without a
receiver) from anywhere.