And modules unlike classes therefore do not have a.
Module function ruby example.
However modules can not be instantiated.
The modulo function in ruby returns the modulo value of a number by another number.
The ruby include statement simply makes a reference to a named module.
The instance method versions are made private.
It now makes sense to introduce another language feature in ruby.
Consider the following module.
Second a ruby include does not simply copy the module s instance methods into the class.
They are things that hold methods just like classes do.
It groups methods at a module level without using the mixin facility for example the base64 module i highly recommend you to read the source.
Remember classes and modules are treated as objects in ruby.
Instead it makes a reference from the class to the included module.
I e it is not possible to create objects from a module.
Using the require method.
This is an example where we are creating a module and inside this module we are defining a few methods and a constant and then we are directly accessing these methods and constants with the name of the modules.
So this behavior isn t that different from the instance method behavior we saw in the first example.
These functions may be called with the module as a receiver and also become available as instance methods to classes that mix in the module.
If used with no arguments subsequently defined methods become module.
In ruby modules are somewhat similar to classes.
If that module is in a separate file you must use require to drag that file in before using include.
Module functions are copies of the original and so may be changed independently.
The require method takes the name of the file to require as a string as a single argument this can either be a path to the file such as lib some library rb or a shortened name such as some library if the argument is a path and complete filename the require method will look there for the file.
The function returns the modulo value of a number by another number.
Below are the examples of ruby modules.
Examples to implement of ruby modules.
You can embed a module in a class.
Inside of a class or module definition.
In ruby a module can be used as logical entity.
To embed a module in a class you use the include statement in the class syntax include modulename if a module is defined in a separate file then it is required to include that file using require statement before embedding module in a class.
