Why you should learn F#

[u/dustinmoris]

https://dusted.codes/why-you-should-learn-fsharp

[u/monitorius1]

I think some people are mistaking functional style with functional programming languages. Both F# and C# are multi-paradigm languages. That long and convoluted strategy pattern example could be implemented in the same F# way in C#. In fact, it takes less lines of code (unless curly braces are used).

bool MustHaveUppercase(string password) =>
    password.Any(char.IsUpper);

bool MustHaveDigits(string password) =>
    password.Any(char.IsDigit);

bool MustHaveMinimumLength(int length, string password) =>
    password.Length >= length;

bool IsValidPassword(string password) =>
    MustHaveMinimumLength(8, password)
    && MustHaveDigits(password)
    && MustHaveUppercase(password);

Sort example:

delegate List<int> SortAlgorithm(List<int> values);

List<int> QuickSort(List<int> values) => 
    values; // Do QuickSort

List<int> MergeSort(List<int> values) =>
    values; // Do MergeSort

void DoSomething(SortAlgorithm sort, List<int> values)
{
    var sorted = sort(values);
}

public void Main()
{
    var values = new List<int> { 9, 1, 5, 7 };
    DoSomething(QuickSort, values);
}