/Ruby/Class inheriting multiple modules in ruby

Class inheriting multiple modules in ruby

First, two modules included:

module M; end
module N; end
class C
  include M
  include N
end

C.ancestors # => [C, N, M, Object, Kernel, BasicObject]
So the methods will first be searched for in C. If a method with the given name is not found, it is searched for first in N and then in M. In other words - the reverse order of which you included the modules.

Second, module, including a module, included in a class:

module X; end
module Y
  include X
end
class K
  include Y
end

K.ancestors # => [K, Y, X, Object, Kernel, BasicObject]
So we can see that the same rule applies for including in modules. Just as in the previous example a method will first be searched for in C and only then in the modules included in C, here a method will first will be searched for in a module, and only then in the included modules in that module.

The reason for that, other than consistency, is that classes are actually modules in Ruby:

Class.superclass # => Module

Source: stackoverflow.com

Similar codes

0 vote248 views1 answer
# Create empty 2 dimensional array
Ruby
5 votes282 views2 answers
Kill rails
Ruby
1 vote252 views2 answers
Rails check_box_tag
Ruby
1 vote258 views1 answer
Rails where regex
Ruby
0 vote282 views1 answer
Rails edit models
Ruby
2 votes240 views2 answers
Ruby push array
Ruby
0 vote238 views1 answer
Ruby random number between
Ruby
-1 vote243 views1 answer
Rails model column
Ruby
0 vote253 views1 answer
Rails rspec test email sent
Ruby
0 vote235 views1 answer
If ruby
Ruby