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csharplang/meetings/2020/README.md
Andy Gocke 45d49ec640 Add LDM notes for May 6, 2020
2020-05-09 17:06:58 -07:00

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# Upcoming meetings for 2020
## Schedule ASAP
- init-only: should `_ = new C() { readonlyField = null };` be allowed in a method on type `C`? (Jared/Julien)
- init-only: confirm metadata encoding (`IsExternalInit` modreq) with compat implications (Jared/Julien)
- init-only: init-only methods ? `init void Init()` (Jared/Julien)
## Schedule when convenient
## Recurring topics
- *Triage championed features*
- *Triage milestones*
- *Design review*
## May 27, 2020
- https://github.com/dotnet/csharplang/issues/1711 Roles, extensions and static interfaces (Mads)
## May 18, 2020
- Record Monday (Andy, Jared, Mads)
## May 13, 2020
- [Triage](https://github.com/dotnet/csharplang/issues?q=is%3Aopen+is%3Aissue+label%3A%22Proposal+champion%22+no%3Amilestone)
## May 11, 2020
- Record Monday (Andy, Jared, Mads)
- https://gist.github.com/MadsTorgersen/3fb6b7461e211c8458044ad5115f2117 Primary constructors and records (Mads)
## April 29, 2020
- Design review
## April 22, 2020
- https://github.com/dotnet/csharplang/projects/4 Triage for C# 10.0 (Mads)
## March 18, 2020
- https://github.com/jaredpar/csharplang/blob/record/proposals/recordsv3.md clone-style records (Jared)
## March 11, 2020
- Records design (Mads, Andy)
## Jan 29, 2020
- Records: drilling in to individual features (Mads)
## Jan 13, 2020
- Records: Paging back in the previous proposal (Andy)
# C# Language Design Notes for 2020
Overview of meetings and agendas for 2020
## May 6, 2020
[C# Language Design Notes for May 6, 2020](https://github.com/dotnet/csharplang/blob/master/meetings/2020/LDM-2020-05-06.md)
1. Target-typing ?: when the natural type isn't convertible to the target type.
1. Allow `if (x is not string y)` pattern.
1. Open issues in extension `GetEnumerator`
1. Args in top-level programs
## May 4, 2020
[C# Language Design Notes for May 4, 2020](https://github.com/dotnet/csharplang/blob/master/meetings/2020/LDM-2020-05-04.md)
1. Reviewing design review feedback
## April 27, 2020
[C# Language Design Notes for April 27, 2020](https://github.com/dotnet/csharplang/blob/master/meetings/2020/LDM-2020-04-27.md)
Records: positional & primary constructors
## April 20, 2020
[C# Language Design Notes for April 20, 2020](https://github.com/dotnet/csharplang/blob/master/meetings/2020/LDM-2020-04-20.md)
Records: Factories
## April 15, 2020
[C# Language Design Notes for April 15, 2020](https://github.com/dotnet/csharplang/blob/master/meetings/2020/LDM-2020-04-15.md)
1. Non-void and non-private partial methods
2. Top-level programs
## April 13. 2020
[C# Language Design Notes for April 13, 2020](https://github.com/dotnet/csharplang/blob/master/meetings/2020/LDM-2020-04-13.md)
1. Roadmap for records
2. Init-only properties
## April 8, 2020
[C# Language Design Notes for April 8, 2020](https://github.com/dotnet/csharplang/blob/master/meetings/2020/LDM-2020-04-08.md)
1. `e is dynamic` pure null check
2. Target typing `?:`
3. Inferred type of an `or` pattern
4. Module initializers
## April 6, 2020
[C# Language Design Notes for April 6, 2020](https://github.com/dotnet/csharplang/blob/master/meetings/2020/LDM-2020-04-06.md)
1. Record Monday: Init-only members
## April 1, 2020
[C# Language Design Notes for April 1, 2020](https://github.com/dotnet/csharplang/blob/master/meetings/2020/LDM-2020-04-01.md)
1. Function pointer design adjustments
2. `field` keyword in properties
## March 30, 2020
1. Record Monday
[C# Language Design Notes for March 30, 2020](LDM-2020-03-30.md)
## March 25, 2020
[C# Language Design Notes for March 25, 2020](LDM-2020-03-25.md)
1. Open issues with native int
2. Open issues with target-typed new
## March 23, 2020
[C# Language Design Notes for March 23, 2020](LDM-2020-03-23.md)
1. Triage
2. Builder-based records
## March 9, 2020
[C# Language Design Notes for March 9, 2020](LDM-2020-03-09.md)
1. Simple programs
2. Records
## Feb 26, 2020
[C# Language Design Notes for Feb. 26, 2020](LDM-2020-02-26.md)
Design Review
## Feb 24
[C# Language Design Notes for Feb. 24, 2020](LDM-2020-02-24.md)
Taking another look at "nominal" records
## Feb 19
[C# Language Design Notes for Feb. 19, 2020](LDM-2020-02-19.md)
State-based value equality
## Feb 12
[C# Language Design Notes for Feb. 12, 2020](LDM-2020-02-12.md)
Records
## Feb 10
[C# Language Design Notes for Feb. 10, 2020](LDM-2020-02-10.md)
Records
## Feb 5
[C# Language Design Notes for Feb. 5, 2020](LDM-2020-02-05.md)
- Nullability of dependent calls (Chuck, Julien)
- https://github.com/dotnet/csharplang/issues/3137 Records as individual features (Mads)
## Feb 3
[C# Language Design Notes for Feb. 3, 2020](LDM-2020-02-03.md)
Value Equality
## Jan 29, 2020
[C# Language Design Notes for Jan. 29, 2020](LDM-2020-01-29.md)
Records: "With-ers"
## Jan 22, 2020
[C# Language Design Notes for Jan 22, 2020](LDM-2020-01-22.md)
1. Top-level statements and functions
2. Expression Blocks
## Jan 15, 2020
[C# Language Design Notes for Jan 15, 2020](LDM-2020-01-15.md)
Records
1. "programming with data"
1. Decomposing subfeatures of records
## Jan 8, 2020
[C# Language Design Notes for Jan 8, 2020](LDM-2020-01-08.md)
1. Unconstrained type parameter annotation
2. Covariant returns
## Jan 6, 2020
[C# Language Design Notes for Jan 6, 2020](LDM-2020-01-06.md)
1. Use attribute info inside method bodies
1. Making Task-like types covariant for nullability
1. Casting to non-nullable reference type
1. Triage
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