2020年4月20日 · What is the F# language created to accomplish? The F# research project sought to create a variant of the OCaml language running on top of the .Net platform. A related project at MSR Cambridge, SML.NET, did the same for Standard ML. (OCaml and Standard ML are both variants of the ML language.) The motivations for this might have included

2014年11月19日 · I noticed in some code in this sample that contained the >> operator: let printTree = tree >> Seq.iter (Seq.fold (+) "" >> printfn "%s") What does the >> operator mean/do?

This F# code open System open FSharp.Reflection let getInterfaces f: Type seq = Unchecked.defaultof ...

F#: The '&' operator should not normally be redefined. 6. F# Syntax Question. 20. Use of the and keyword ...

I'm trying to create DU cases from strings. The only way I can see doing this is by enumerating over the DU cases via Microsoft.FSharp.Reflection.FSharpType.GetUnionCases and then picking the Union...

In F# I want to transform a list of chars into a string. Consider the following code: let lChars = ['a';'b';'c'] If I simply do lChars.ToString, I get "['a';'b';'c']". I'm trying to get "abc". I realize I could probably do a List.reduce to get the effect I'm looking for but it seems like there should be some primitive built into the library to ...

2020年1月14日 · In F#, it is quite normal to have large tuples and very very large records and discriminated unions. Making these structs by default would not be a good choice. Reference types are very powerful and designed to work very well on .NET and shouldn't be avoided by default just because in some cases a struct could result in slightly faster performance.

2010年2月5日 · In this case, you don't need to have pre-defined a let-bound function to use the operator; F# will find it on the type. You can take particularly good advantage of this using inline definitions: let inline addSpecial a b = a +! b let w2 = addSpecial w (Wrapper 3)

2016年1月19日 · Why use a backward pipe operator instead of a function chaining? let distanceFromOrigin aPoint = let square x = x * x sqrt (square aPoint.x + square aPoint.y) vs let distanceFromOrigin a...

2012年2月3日 · New solution - splitAt is now built into List and Array. See commit around 2014 on github. I noticed this today while using F# in VS.2015. Now you can simply do this... let splitList n list = List.splitAt n list And as you might expect the signature is... n: int -> list: 'a list -> 'a list * 'a list Example usage: