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Proposal: Allow [AsyncMethodBuilder(...)] on methods

Implemented Needs ECMA SpecThis feature has been implemented in C#, but still needs to be merged into the ECMA specificationThis feature has been implemented in C#, but still needs to be merged into the ECMA specification

Proposal

Proposal champion

Status: Open.

#1407 In dotnet/csharplang;

· stephentoub opened on Mar 22, 2018

[Proposal]: Records with sealed base ToString override

Implemented Needs ECMA SpecThis feature has been implemented in C#, but still needs to be merged into the ECMA specificationThis feature has been implemented in C#, but still needs to be merged into the ECMA specification

Proposal

Proposal champion

Smallish Feature

Status: Open.

#4174 In dotnet/csharplang;

· jnm2 opened on Nov 25, 2020

Champion "Constant interpolated strings"

Implemented Needs ECMA SpecThis feature has been implemented in C#, but still needs to be merged into the ECMA specificationThis feature has been implemented in C#, but still needs to be merged into the ECMA specification

Proposal champion

Soon candidate

Status: Open.

#2951 In dotnet/csharplang;

· agocke opened on Nov 12, 2019

Champion "Mix Declarations and Variables in Deconstruction"

Implemented Needs ECMA SpecThis feature has been implemented in C#, but still needs to be merged into the ECMA specificationThis feature has been implemented in C#, but still needs to be merged into the ECMA specification

Proposal

Proposal champion

Smallish Feature

Status: Open.

#125 In dotnet/csharplang;

· gafter opened on Feb 15, 2017

Proposal: Extended property patterns

Implemented Needs ECMA SpecThis feature has been implemented in C#, but still needs to be merged into the ECMA specificationThis feature has been implemented in C#, but still needs to be merged into the ECMA specification

Proposal champion

Status: Open.

#4394 In dotnet/csharplang;

· alrz opened on Feb 5, 2021

[Proposal]: Improved Definite Assignment Analysis

Implemented Needs ECMA SpecThis feature has been implemented in C#, but still needs to be merged into the ECMA specificationThis feature has been implemented in C#, but still needs to be merged into the ECMA specification

Proposal

Proposal champion

Status: Open.

#4465 In dotnet/csharplang;

· RikkiGibson opened on Feb 25, 2021

[Proposal] Extend with expression to anonymous type

Implemented Needs ECMA SpecThis feature has been implemented in C#, but still needs to be merged into the ECMA specificationThis feature has been implemented in C#, but still needs to be merged into the ECMA specification

Proposal champion

Smallish Feature

Status: Open.

#3530 In dotnet/csharplang;

· leandromoh opened on Jun 3, 2020

Proposal: record structs

Implemented Needs ECMA SpecThis feature has been implemented in C#, but still needs to be merged into the ECMA specificationThis feature has been implemented in C#, but still needs to be merged into the ECMA specification

Proposal

Proposal champion

Status: Open.

#4334 In dotnet/csharplang;

· jcouv opened on Jan 15, 2021

[Proposal]: Improved interpolated strings

Implemented Needs ECMA SpecThis feature has been implemented in C#, but still needs to be merged into the ECMA specificationThis feature has been implemented in C#, but still needs to be merged into the ECMA specification

Proposal

Proposal champion

Status: Open.

#4487 In dotnet/csharplang;

· 333fred opened on Mar 1, 2021

[Proposal]: Enhanced #line directives

Implemented Needs ECMA SpecThis feature has been implemented in C#, but still needs to be merged into the ECMA specificationThis feature has been implemented in C#, but still needs to be merged into the ECMA specification

Proposal

Proposal champion

Status: Open.

#4747 In dotnet/csharplang;

· tmat opened on May 13, 2021

[Proposal] Add ability to declare global usings for namespaces, types and aliases by using a command line switch

Feature Request

Implemented Needs ECMA SpecThis feature has been implemented in C#, but still needs to be merged into the ECMA specificationThis feature has been implemented in C#, but still needs to be merged into the ECMA specification

Proposal

Proposal champion

Status: Open.

#3428 In dotnet/csharplang;

· AlekseyTs opened on May 6, 2020

[Proposal]: Explicit lambda return type

Implemented Needs ECMA SpecThis feature has been implemented in C#, but still needs to be merged into the ECMA specificationThis feature has been implemented in C#, but still needs to be merged into the ECMA specification

Proposal

Proposal champion

Status: Open.

#4934 In dotnet/csharplang;

· jcouv opened on Jul 16, 2021

Proposal: File scoped namespaces

Feature Request

Implemented Needs ECMA SpecThis feature has been implemented in C#, but still needs to be merged into the ECMA specificationThis feature has been implemented in C#, but still needs to be merged into the ECMA specification

Proposal champion

Status: Open.

#137 In dotnet/csharplang;

· bomzj opened on Feb 17, 2017

Champion "CallerArgumentExpression"

Implemented Needs ECMA SpecThis feature has been implemented in C#, but still needs to be merged into the ECMA specificationThis feature has been implemented in C#, but still needs to be merged into the ECMA specification

Proposal champion

Soon candidate

Status: Open.

#287 In dotnet/csharplang;

· gafter opened on Mar 19, 2017

Champion "Allow no-arg constructor and field initializers in struct declarations"

Implemented Needs ECMA SpecThis feature has been implemented in C#, but still needs to be merged into the ECMA specificationThis feature has been implemented in C#, but still needs to be merged into the ECMA specification

Proposal champion

Status: Open.

#99 In dotnet/csharplang;

· gafter opened on Feb 14, 2017