csharplang/meetings/2019

Upcoming meetings for 2019

Schedule ASAP

• Triage #2152: "Allow Obsolete attribute on getters and setters"

Schedule when convenient

• Discussion of refreshing language spec (Neal)
• Allowing pattern-based foreach and await foreach to bind to an extension GetEnumerator/GetAsyncEnumerator and MoveNext/MoveNextAsync (Julien/Chris)
• Making a CancellationToken available in async-iterator method bodies; possibly reserving a keyword (Julien/Stephen)
• Syntax of positional records/primary constructors (Andy)

Recurring topics

• Triage championed features
• Triage milestones
• Design review

Feb 13, 2019

Feb 11, 2019

Nullable:

1. MaybeNull and other attributes, and the relation to unspeakable types. (Chuck)
2. Do we want to have an analysis that can tell when a test against null would have a known result, so we can produce a hidden diagnostic? roslyn#29868 (Aleksey/Neal)
3. Tracking assignments through refs and ref expressions (e.g. (q ? ref x : ref y) = null; or (q ? ref x : ref y) = "";), and the state of a variable to which a ref has been taken.
4. Nullability flow through conditional access when unconstrained generic type parameters are involved. (Aleksey)
5. Should reachability affect nullable analysis? roslyn#28798 roslyn#30949 roslyn#32047 (Fred/Chuck/Aleksey)

C# Language Design Notes for 2019

Overview of meetings and agendas for 2019

Jan 23, 2019

C# Language Design Notes for Jan 23, 2019

Function pointers (Updated proposal)

Jan 16, 2019

C# Language Design Notes for Jan 16, 2019

1. Shadowing in lambdas
2. Pattern-based disposal in await foreach

Jan 14, 2019

C# Language Design Notes for Jan 14, 2019

• Generating null-check for parameter! https://github.com/dotnet/csharplang/pull/2144

Jan 9, 2019

C# Language Design Notes for Jan 9, 2019

1. GetAsyncEnumerator signature
2. Ambiguities in nullable array type syntax
3. Recursive Patterns Open Language Issues https://github.com/dotnet/csharplang/issues/2095

Jan 7, 2019

C# Language Design Notes for Jan 7, 2019

Nullable:

1. Variance in overriding/interface implementation
2. Breaking change in parsing array specifiers