Module Function Ruby Example

If that module is in a separate file you must use require to drag that file in before using include.

Module function ruby example.

Below are the examples of ruby modules. You can embed a module in a class. In ruby a module can be used as logical entity. The function takes number1 and number2 whose modulo is returned.

The instance method versions are made private. However modules can not be instantiated. Instead it makes a reference from the class to the included module. The modulo function in ruby returns the modulo value of a number by another number.

I e it is not possible to create objects from a module. 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. The ruby include statement simply makes a reference to a named module. 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.

In ruby modules are somewhat similar to classes. 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. And modules unlike classes therefore do not have a. If used with no arguments subsequently defined methods become module.

Consider the following module. The function returns the modulo value of a number by another number. It now makes sense to introduce another language feature in ruby. Remember classes and modules are treated as objects in ruby.

We can explain the below example in the. So this behavior isn t that different from the instance method behavior we saw in the first example. Using the require method. Module functions are copies of the original and so may be changed independently.

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. Second a ruby include does not simply copy the module s instance methods into the class. Inside of a class or module definition. One feature of ruby that makes it such a good fit for frameworks like rails is that you can execute arbitrary code inside class and module.