Recently I came across a strange word "Mixin". Got to know that it is something related to "has-a-relationship" in OOPS. A class can be utilized without inheriting it but by having its object in another class. This is very clear. Coming to Magento 2, I have seen many articles which are relating this term to javascript, CSS Less etc.
I am curious to know the application of "mixins" in Magento 2. I can understand that as it is related to OOPs it can apply everywhere but what is the situation or a real time scenario where this will be more helpful and meaningful?