How to use F# 4.7 on Mac? - f#

With the latest VS for mac installed (8.5 preview) and the latest net core sdk (3.1.200) F# 4.7 should be supported. When I run the dotnet fsi, indeed language features are supported and the FSI shows F# 4.7 as the F# version.
In VS for mac, in the preferences settings the exact command: /usr/local/share/dotnet/dotnet fsi is the path to the F# compiler.
However, when creating a new fix file and trying F# language features, it doesn’t work and the FSI in VS for mac doesn’t compile the code. Also, the FI for mac doesn’t show with F# version is used.
So, it is possible to use F# 4.7 features in Visual Studio for Mac?

The disappointing answer is, you can't. I have raised this issue months ago. But still no luck.

Related

Standalone F# installer

I know this question has been asked before, but none of the answers help me in any sort.
I would like to know a way of installing F# on a computer that has no internet connection (visual studio is already installed on the target computer, but only C# components). Do you know if it's doable ?
Thanks!
If you only need to support .NET Core, then you get everything F#-related just be requiring .NET Core with your Visual Studio installation. This includes the compiler, FSI, and templates. The only thing you'll have missing is the old-style F# templates that don't use the .NET SDK.

Running executables produced by F# 3 under Mono

I would like to compile an executable using the F# 3.0 command-line compiler, and then run it under Mono.
The code starts to execute, but Mono dies almost immediately complaining it cannot load System.Core. Googling this suggests that I should be targeting .net 3.5, and not version 4. Further Googling suggests that the F# compiler used to take option --cli-version, but it no longer seems to accept that.
I am sure there is a way, seeing as if I were to use MSVC there would be somewhere I could click to set the desired CLR version.
What should I do please? Many thanks.
EDIT:
I have tried targeting .net 3.5 on a simpler project developed in the MSVC GUI. The executable then asked for FSharp.Core 2.0.0, and got further than before. The F# 3 compiler seems to come with a .net 2.0 core library, so I would expect that it is supposed to be able to generate code compatible with obsolete versions of the framework. The question this leaves is "if the GUI can do it, how do I do the same thing from the command line", please?
If you're using F# 3.0 there's no reason not to use .NET 4.0 by default (unless, of course, you need to interoperate with existing .NET 2.0 or 3.5 assemblies).
Which version of Mono are you running on? F# 3.0 requires Mono 2.10 or newer, but I'd strongly suggest you use Mono 3.0 or newer.

Is F# in general and the F# plugin for MonoDevelop maintained for Linux?

I would like to play around with F# on my Linux box, but I struggle to find up-to-date versions of the relevant files. The F# cross-platform packages are from 2010 and the plug-in seems to be for Monodevelop 2.4 (I have 2.8 installed, which is not the newest anyway...). Is the project still alive? Am I looking at the right place?
F# cross-platform package is pretty outdated. Depending on which Linux distro you're using, F# may be distributed with Mono 2.10.x (check Mono homepage for details). Otherwise, you should build F# compiler from source for latest version.
The original F# binding does not work with MonoDevelop 2.8. Fortunately, the F# binding is being actively developed by Scott Stephens under a Google Summer of Code project. There are first positive sights as being mentioned here. For discussion, you can post on F# Open Source Community Group or ask questions here.
The F# addin for Monodevelop is still developed as of 2014 and is available from addins.monodevelop.com.

Where can I get the F# Compiler and FSI v4.0?

I know I can download the "April CTP" to get F# 2.0 for .NET 2.0. But I need FSC and F# Interactive for .NET 4.0. On a machine with VS 2010 installed, it ends up in C:\Program Files (x86)\Microsoft F#\v4.0. Is there a redistributable for this?
If you installed Visual Studio 11 Beta or Visual Studio 2012, I recommend you check the following path, where you will find Fsi.exe and Fsc.exe.
C:\Program Files (x86)\Microsoft SDKs\F#\3.0\Framework\v4.0
Others have provided good answers; I'll summarize and add one more bit (2nd bullet):
We don't have any polished story here yet. We're working on one.
In the case of the compiler, you may be able to get by with the fsc.exe in the April CTP (it is capable of referencing .NET 4.0 assemblies and building .NET 4.0 assemblies, even though the compiler itself runs on 2.0). (Note that for building project files, you might also need the right Microsoft.FSharp.targets imported; I haven't worked all that through...)
If you were to copy the right assemblies and targets files from a VS2010 install to another machine, that would work, but offhand I don't know if that violates the VS license.
The existing downloadable "redist" does only contain FSharp.Core.dll.
(possibly see also this for a similar discussion but no extra info, as well as this Connect request)
The redistributable, for the F# runtime, is available at the following link, but unfortunately doesn't include the compiler or F# interactive:
http://www.microsoft.com/downloads/details.aspx?FamilyID=5f0a79f8-925f-4297-9ae2-86e2fdcff33c&displaylang=en
If you already have VS2010 installed on the machine there shouldn't be no need to install it, as the compiler, fsi, and F# runtime will be installed with VS. It should be just a matter of adding the directory containing the compiler to the path, so the shell can find it (if you want to use the compiler/fsc from the command-line).
This is an old question, but I came across it and thought that I'd add an update for people who find it through Google:
The current version of the F# CTP (April 2011) includes both .NET 2.0 and .NET 4.0 binaries, including FSI.exe. On my install...
.NET 2 = C:\Program Files (x86)\FSharp-2.0.0.0\bin\
.NET 4 = C:\Program Files (x86)\FSharp-2.0.0.0\v4.0\bin\
I think that there is no standalone installation of F# for .NET 4.0 (similar to the standalone installation for .NET 2.0). The reason probably is that F# for .NET 4.0 is simply meant to be distributed only as part of Visual Studio 2010 and not separately (just like other core Visual Studio languages).
If you need to use fsi.exe and fsc.exe for .NET 4.0 on a machine that doesn't have Visual Studio installed, you'll probably need to copy them together with the referenced libraries. This shouldn't be that difficult - you only need assemblies from "C:\Program Files (x86)\Microsoft F#\v4.0" together with FSharp.Core.dll (which should be added to the GAC) and (I think) also ISymWrapper.dll (but I'm not quite sure where this is located).

F# on/in SharpDevelop?

Is there an F# compiler (plugin?) for SharpDevelop? I use SharpDevelop on my netbook for hobby development and it would be cool to program in f# on it.
If you install the F# compiler, SharpDevelop 3.0 automatically supports it. (Oh well. At least people will get a good answer now.)
On Windows, I settled on Visual Studio Shell and the May F# CTP.
There's a rather old (Aug 2008) F# Plugin for MonoDevelop. Read more on its Wiki page.
For the F# compiler, download the xip file from the F# May 2009 CTP page. there are certain known issues with running it on Mono, just search for "F# Mono" for more info.
Now Visual Studio 2010 supports F#. However, that doesn't include the Express editions, so if you're looking for F# IDEs for free, then there's a MonoDevelop plugin (which needs v2.6 IIRC), you can install Visual Studio Shell Integrated and add FSharp to that, or SharpDevelop.
Of these, I'd probably recommend the Visual Studio Shell over the others as it seems to have the best integration between the editor window and the F# Console window. However, if you're interested in doing things cross-platform, then look at MonoDevelop, as you can make sure that something will work on Mono.

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