Mathias Brandewinder on .NET, F#, VSTO and Excel development, and quantitative analysis / machine learning.
by Mathias 24. December 2009 08:28

After spending a few years working mostly with C#, it has become a natural, comfortable way to think about programming problems. I won’t complain about it -- comfort is nice. At the same time, I strongly believe in questioning what you do, especially the un-stated assumptions. When you start doing things a certain way without asking yourself if this is indeed the way to go, you are on a dangerous path, especially in a fast-evolving field like software engineering. So when I read the advice to “learn one new language every year”, it resonated, and I decided to give a shot at F#. I purchased “Programming F#”, and I am working my way through the Project Euler problems as an exercise.

This is my first exposure to functional languages, and it has proven a very stimulating mental exercise so far. One particular aspect I have struggled with is if … then statements. Chris Smith says that “if expressions work just as you would expect”. That’s sort of true, except for the fact that an if … then statement with no else clause can’t return a value.

This made me realize how much I use single-pronged if statements in C#, guard clauses being a prime example.

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