Marco Russo and Alberto Ferrari support a pattern:
DAX user-defined functions (UDFs) are a powerful tool for improving the quality of your semantic models. DAX authors with an IT background are accustomed to creating generic code using functions. However, many DAX creators came from different backgrounds of expertise, such as statistics, business, and marketing. They may not recognize the immense power that functions have brought to the Power BI community.
In this article, we want to practically show, through an example, how to wisely use functions to improve the generalization of code and to reduce the complexity of your semantic models, with the goal of raising curiosity towards user-defined functions and – in general – the world of code development.
Read on for an example, as well as a link to the like-for-like pattern and what it means.