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CHANGELOG.md

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Copyright (c) Microsoft Open Technologies, Inc.  All Rights Reserved.  

Licensed under the Apache License, Version 2.0.  
See License.txt in the project root for license information.

Visual F#

All notable changes to this project will be documented in this file.

4.0.0 - 20 July 2015

Includes commits up to dd8252eb8d20aaedf7b1c7576cd2a8a82d24f587

Language, compiler, runtime, interactive

  • Normalization and expansion of Array, List, and Seq modules
    • New APIs for 4.0: chunkBySize, contains, except, findBack, findInstanceBack, indexed, item, mapFold, mapFoldBack, sortByDescending, sortDescending, splitInto, tryFindBack, tryFindIndexBack, tryHead, tryItem, tryLast Collection API additions
  • Other new APIs
    • Option.filter, Option.toObj, Option.ofObj, Option.toNullable, Option.ofNullable
    • String.filter
    • Checked.int8, Checked.uint8
    • Async.AwaitTask (non-generic)
    • WebClient.AsyncDownloadFile, WebClient.AsyncDownloadData
    • tryUnbox, isNull
  • New active pattern to match constant Decimal in quotations
  • Slicing support for lists
  • Support for consuming high-rank (> 4) arrays
  • Support for units of measure in printf-family functions
  • Support for constructors/class names as first-class functions
  • Improved exception stack traces in async code
  • Automatic mutable/ref conversion
  • Support for static arguments to provided methods
  • Support for non-nullable provided types
  • Added NonStructuralComparison module containing non-structural comparison operators
  • Support for rational exponents in units of measure
  • Give fsi.exe, fsiAnyCpi.exe nice icons
  • Microsoft. optional in namepsace paths from FSharp.Core
  • Support for extension properties in object initializers
  • Pre-support (not yet used) for additional nativeptr intrinsics
  • Simplified, more robust resolution of type references in quotations
  • Support for inheritance of types that have multiple interface instantiations
  • Extended preprocessor grammar
  • Support for implicit quotation of expressions used as method arguments
  • Support for multiple properties in [<StructuredFormatDisplay>]
  • Eliminate tuple allocation for implicitly returned formal arguments
  • Perf: fsc.exe now uses GCLatencyMode.Batch
  • Perf: Improved hash/compare/distinctBy/groupBy performance
  • Perf: Seq.toArray perf improvement
  • Perf: Use OptimizedClosures.FSharpFunc in seq.fs where applicable
  • Perf: Use literals and mutable variables instead of ref cells for better performance in SHA1 calc
  • Perf: Use smart blend of System.Array.Copy and iterative copy for array copies
  • Perf: Change Seq.toList to mutation-based to remove reliance on List.rev
  • Perf: Change pdbClose to test if files are locked before inducing GCs
  • Perf: Use server GC mode for compiler
  • Bugfix: Changed an error message within the Set module to use the correct module name.
  • Bugfix: Fix assembly name of warning FS2003
  • Bugfix #132: FSI Shadowcopy causes a significant degrade in the fsi first execute time
  • Bugfix #131: Fix getentryassembly return value when shadowcopy is enabled in FSI
  • Bugfix #61 Nonverifiable code generated with units of measure conversion
  • Bugfix #68 BadImageFormatException with Units of Measure
  • Bugfix #146 BadImageFormatException in both Release and Debug build with units of measure
  • Bugfix: Incorrent cross-module inlining between different .NET profiles
  • Bugfix: Properly document exceptions in Array module
  • Bugfix #24: Error reporting of exceptions in type providers AddMemberDelayed
  • Bugfix #13: Error on FSI terminal resize
  • Bugfix #29: Module access modifier internal does not give internal access if no namespaces are used
  • Bugfix: Fix typo in error message for invalid attribute combination
  • Bugfix #27: Private module values can be mutated by other modules
  • Bugfix #38: ICE - System.ArgumentException: not a measure abbreviation, or incorrect kind
  • Bugfix #44: Problems using FSI to #load multiple files contributing to the same namespace
  • Bugfix #95: [<RequireQualifiedAccess>] allows access to DU member if qualified only by module name
  • Bugfix #89: Embedding an untyped quotation in a typed quotation results in ArgumentException
  • Bugfix: Show warning when Record is accessed without type but [<RequireQualifiedAccess>] was set
  • Bugfix #139: Memory leak in Async.AwaitWaitHandle
  • Bugfix #122: stfld does not give .volatile annotation
  • Bugfix #30: Compilation error "Incorrect number of type arguments to local call"
  • Bugfix #163: Array slicing does not work properly with non 0-based arrays
  • Bugfix #148: XML doc comment generation adding empty garbage
  • Bugfix #98: Using a single, optional, static parameter to a type provider causes failure
  • Bugfix #109: Invalid interface generated by --sig
  • Bugfix #123: Union types without sub-classes should be sealed
  • Bugfix #68: F# 3.1 / Profile 259: <@ System.Exception() @> causes AmbiguousMatchException at runtime
  • Bugfix #9: Internal error in FSI: FS0192: binding null type in envBindTypeRef
  • Bugfix #10: Internal error: binding null type in envBindTypeRef
  • Bugfix #266: windowed error message incorrectly flags "non-negative" input when "positive" is what's needed
  • Bugfix #270: "internal error: null: convTypeRefAux" in interactive when consuming quotation containing type name with commas or spaces
  • Bugfix #276: Combining struct field with units of measure will result managed type instead of unmanaged type
  • Bugfix #269: Accidentally #loading a DLL in script causes internal error
  • Bugfix #293: #r references without relative path are not loaded when file is local
  • Bugfix #237: Problems using FSI on multiple namespaces in a single file
  • Bugfix #338: Escaped unicode characters are encoded incorrectly
  • Bugfix #370: Seq.sortBy cannot handle sequences of floats containing NaN
  • Bugfix #368: Optimizer incorrectly assumes immutable field accesses are side-effect free
  • Bugfix #337: Skip interfaces that lie outside the set of referenced assemblies
  • Bugfix #383: Class with [<AllowNullLiteral(false)>] barred from inheriting from normal non-nullable class
  • Bugfix #420: Compiler emits incorrect visibility modifier for internal constructors of abstract class
  • Bugfix #362: Depickling assertion followed by nullref internal errors in units-of-measure case
  • Bugfix #342: FS0193 error when specifying sequential struct layout of a type
  • Bugfix #299: AmbiguousMatchException with [<ReflectedDefinition>] on overloaded extension methods
  • Bugfix #316: Null array-valued attribute causes internal compiler error
  • Bugfix #147: FS0073: internal error: Undefined or unsolved type variable: 'a
  • Bugfix #34: Error in pass2 for type FSharp.DataFrame.FSharpFrameExtensions, error: duplicate entry 'Frame2.GroupRowsBy' in method table
  • Bugfix #212: Record fields initialized in wrong order
  • Bugfix #445: Inconsistent compiler prompt message when using --pause switch
  • Bugfix #238: Generic use of member constraint solved to record field causes crash

Visual Studio

  • Updated all templates (except tutorial) to include AssemblyInfo.fs setup in the same manner as default C# project templates
  • Add keyboard shortcuts for FSI reset and clear all
  • Improved debugger view for Map values
  • Improved performance reading stdout/stderr from fsi.exe to F# Interactive window
  • Support for VS project up-to-date check
  • Improved project template descriptions, make it clearer how to target Xamarin platforms
  • Intellisense completion in object initializers
  • Add menu entry "Open folder in File Explorer" on folder nodes
  • Intellisense completion for named arguments
  • Alt+Enter sends current line of code to interactive if there is no selection
  • Support for debugging F# scripts with the VS debugger
  • Add support for hexadecimal values (like 0xFF) ??to MSBuild property BaseAddress
  • Updated menu icons used for F# interactive to align with other VS interactive windows
  • Bugfix: Fix url of fsharp.org website in vs templates
  • Bugfix #141: The "Error List" window does not parse MSBuild messages correctly
  • Bugfix #147: Go to definition doesn't work for default struct ctors
  • Bugfix #50: Members hidden from IntelliSense still show up in tooltips
  • Bugfix #57 (partial): Visual Studio locking access to XML doc files
  • Bugfix #157: Should not allow Framework 4 / F# 3.1 combination in project properties
  • Bugfix #114: Portable Library (legacy) template displays wrong target framework version
  • Bugfix #273: VS editor shows bogus errors when scripts use multi-hop #r and #load with relative paths
  • Bugfix #312: F# library project templates and portable library templates do not have AutoGenerateBindingRedirects set to true
  • Bugfix #321: Provided type quickinfo shouldn't show hidden and obsolete members from base class
  • Bugfix #319: Projects with target runtime 3.0 don't show up correctly on the VS project dialog
  • Bugfix #283: Changing target framework causes incorrect binding redirects to be added to app.config
  • Bugfix #278: NullReferenceException when trying to add some COM references
  • Bugfix #259: Renaming files in folders causes strange UI display
  • Bugfix #350: Renaming linked file results in error dialog
  • Bugfix #381: Intellisense stops working when referencing PCL component from script (requires #r "System.Runtime")
  • Bugfix #104: Using paste to add files to an F# project causes the order of files in the project and on the UI to get out of sync
  • Bugfix #417: 'Move file up/down' keybindings should be scoped to solution explorer
  • Bugfix #246: Fix invalid already rendered folder error
  • Bugfix #106 (partial): Visual F# Tools leak memory while reloading solutions

3.1.2 - 20 August 2014

Includes commits up to 3385e58aabc91368c8e1f551650ba48705aaa285

Language, compiler, runtime, interactive

  • Allow arbitrary-dimensional slicing
  • Ship versions FSharp.Core.dll built on portable profiles 78 and 259
  • Support "shebang" (#!) in F# source files
  • Vertical pipes disallowed in active pattern case identifiers
  • Enable non-locking shadow copy of reference assemblies in fsi/fsianycpu
  • Inline codegen optimization using structs
  • Perf improvement for Seq.windowed
  • exe.config files for fsc, fsi, fsianycpu now use simple version range instead of long set of explicit version redirects
  • Bugfix #72: Indexer properties with more than 4 arguments cannot be accessed
  • Bugfix #113: Async.Sleep in .NETCore profiles does not invoke error continuation
  • Bugfix #91: String module documentation is false
  • Bugfix #78: Allow space characters in active pattern case identifiers
  • Bugfix: Invalid code generated when calling VB methods with optional byref args
  • Bugfix #69: Invalid code generated when calling C# method with optional nullable args
  • Bugfix #9: XML doc comments on F# record type fields do not appear when accessing in C#
  • Bugfix #59: Compiler always requires System.Runtime.InteropServices, this is not present in all portable profiles
  • Bugfix #17: Incorrect generation of XML from doc comments for Record fields
  • Bugfix #7: NullRef in list comprehension, when for loop works
  • Bugfix #1: Type inference involving generic param arrays
  • Bugfix #37: Perf regression in 3.1.0 related to resolving extension methods
  • Bugfix: Can't run F# console application with 'update' in name
  • Bugfix: Slicing and range expression inconsistent
  • Bugfix: Invalid code is generated when using field initializers in struct constructor

Visual Studio

  • Project templates for F# portable libraries targeting profiles 78 and 259
  • Enable non-locking shadow copy of reference assemblies in fsi/fsianycpu (VS options added)
  • Allow breakpoints to be set inside of quotations
  • Support "Publish" action in project system for web, Azure
  • Bugfix #126: F# package installer does not honor custom install paths for express SKUs
  • Bugfix #75: Microsoft.FSharp.targets shim not deployed with F# SDK
  • Bugfix: Fix crash in smart indent provider
  • Bugfix #55: Cannot add reference to F# PCL project
  • Bugfix: Typos in tutorial project script
  • Bugfix: Required C# event members do not appear in intellisense when signature is (object, byref)

3.1.1 - 24 January 2014

Language, compiler, runtime, interactive

  • Improve F# compiler telemetry
  • Bugfix: Improper treatment of * in AssemblyVersion attribute
  • Bugfix: sprintf "%%" returns "%%" in F# 3.1.0, previously returned "%" in F# 3.0 and earlier
  • Bugfix: F# 3.0 1D slice setter does not compile in F# 3.1.0

Visual Studio

  • Enable installation of Visual F# on VS Desktop Express
  • Added support for showing xml doc comments for named arguments
  • Visual F# package deployable on non-VS machines. Deploys compiler and runtime toolchain plus msbuild targets
  • Bugfix: Errors when attempting to add reference to .NET core library
  • Bugfix: Crash in FSComp.SR.RunStartupValidation()