What are dunder methods? A guide in Mojo🔥

Double underscore (dunder) methods, or special methods, in Mojo—a member of the Python family—allow customization of object behaviors for various operations. Mojo extends Python's dunder method syntax to new functionalities, enabling developers to define how objects interact with common operators like +, -, *, and others. These methods are categorized into several types, including initialization, arithmetic operations, and comparison, among others. The blog post introduces DunderArray, a Mojo struct illustrating the use of dunder methods for operations on arrays, showcasing its ability to handle scalar-vector and vector-vector operations through examples. DunderArray also implements methods defined by built-in traits, allowing the use of standard functions like len() and int(). The post provides a comprehensive exploration of each dunder method's implementation and usage, with examples and code available on GitHub, while highlighting Mojo's Pythonic syntax augmented by system programming features.