The functional paradigm is supported by both the C# and F# languages. Both languages can claim to be multi-paradigm since they fully support both OOP and functional programming, though F# has more of a “functional-first” mindset with object orientation added for completeness, whereas in C# the integration of functional programming aspects appears to be much more harmonious.
Here we are going to take a very cursory look at functional programming in the C# and F# languages. Some of the material ...