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If you have an solution with an F# iOS library project and a C# iOS project, the C# editor doesn't offer any types defined in F# for code completion. The code will compile and run.
=== Xamarin Studio ===
Version 4.1.2 (build 2)
Installation UUID: 6dda1873-b6da-4249-934b-53ec9898b482
Mono 3.0.10 ((no/eff4cb5)
Package version: 300100000
=== Apple Developer Tools ===
Xcode 4.6.2 (2067.2)
=== Xamarin.Mac ===
Xamarin.Mac: Not Installed
=== Xamarin.Android ===
Android SDK: /Users/james/Library/Developer/Xamarin/android-sdk-mac_x86
Supported Android versions:
2.1 (API level 7)
2.2 (API level 8)
2.3 (API level 10)
3.1 (API level 12)
4.0 (API level 14)
4.0.3 (API level 15)
Java SDK: /usr
=== Xamarin.iOS ===
Version: 184.108.40.206 (Trial Edition)
Build date: 2013-11-04 10:49:08-0400
=== Build Information ===
Release ID: 401020002
Git revision: 0fb88a5b486ca8644238e49de32b5c5eb983305d
Build date: 2013-05-06 20:35:00+0000
Xamarin addins: 59d33fcc272e0d0f7211811131eb05d1f994a6b4
=== Operating System ===
Mac OS X 10.8.3
Darwin imac.restphone.com 12.3.0 Darwin Kernel Version 12.3.0
Sun Jan 6 22:37:10 PST 2013
This is technically a bug in the F# addin - it does not properly integrate with MonoDevelop's type system.
I guess we could work around it by detecting such project types and parsing the compiled dll.
It's in the F# binding anyways.
Reported upstream: https://github.com/fsharp/fsharpbinding/issues/156
This bug was marked as fixed for Xamarin Studio 4.0.9, which is currently in the beta channel. Try it out!
This wasn't marked as fixed, it was marked as upstream.
@Michael How is it a bug in the F# addin? Shouldn't the compiled F# dll be able to be read from F#. e.g if a C# project used a F# nuget assembly?
Yes, external dlls are parsed by reading the IL, and it would be possible to do this for languages that don't integrate with the type system. The downside is that the type information in the IDE will not be current - if you edit a projects source files, the type system can't be updated until the project has been compiled. So for example, go to type wouldn't work on a newly defined type until the project had been compiled.
Can the F# addin use types from the c# project ?
For a .NET language plugin adding a NRefactory integration is needed - all other approaches are messy.
@Mike Yes the F# addin can show types from C# and F# projects.
My life sucks because of this.