functional programming

Monads, as they occur in functional programming, seem crazy and difficult to understand to me. Above all explanations and references to the mathematical subfield of category theory are confusing to me. In this post, I’m trying to explain a concept that I haven’t penetrated very deeply myself, in an introductory, application-oriented and superficial way, so that you can become the head nerd at the next party of imperative nerds. This is a translation of the original German article in a collaboration between man and machine....

In my previous article I derived the calculation for passive income from invested assets and demonstrated a small calculator. It struck me that there was a slight delay in the case of high annual numbers. The cause of the delay lies in my implementation of the formula $$ \sum_{k = 1}^{m-1} \frac {1} {\prod_ {t = 1} ^ {k} w_t}. $$ As described in more detail in the article mentioned above, $ w_t $ denotes the relative market value in the month $ t $ and $ m $ the total number of months....

Some time ago I was able to listen to the episode We’re Teaching Functional Programming Wrong of the podcast Corecursive. Richard Feldman tells of a purely functional language with which you can actually create dynamic web pages. It is not even necessary to understand what a Monad is. Since I consider object-oriented programming to be overrated*The talk [Free your Functions](https://www.youtube.com/watch?v=WLDT1lDOsb4) by Klaus Iglberger highlights some practical aspects my point of view....