Module Function Ruby Example

It now makes sense to introduce another language feature in ruby.

Module function ruby example.

Second a ruby include does not simply copy the module s instance methods into the class. 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. However modules can not be instantiated. You can embed a module in a class.

The modulo function in ruby returns the modulo value of a number by another number. Examples to implement of ruby modules. The instance method versions are made private. 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.

And modules unlike classes therefore do not have a. If used with no arguments subsequently defined methods become module. 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. Instead it makes a reference from the class to the included module.

If that module is in a separate file you must use require to drag that file in before using include. 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. 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. Below are the examples of ruby modules.

Consider the following module. So this behavior isn t that different from the instance method behavior we saw in the first example. Module functions are copies of the original and so may be changed independently. 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. The function takes number1 and number2 whose modulo is returned. We can explain the below example in the. The ruby include statement simply makes a reference to a named module.

The function returns the modulo value of a number by another number. I e it is not possible to create objects from a module. Inside of a class or module definition. In ruby modules are somewhat similar to classes.