Draft Spec for Switch Expression as a Statement Expression in C# 9.0

[gafter]

We add the switch expression to the set of syntactic forms permitted in an expression_statement:

expression_statement
    : statement_expression ';'
    ;

statement_expression
    : switch_expression
    // in addition to all the other forms specified elsewhere
    ;

When a switch expression is used as a statement_expression,

• the expression of each arm of the switch expression is required to be a statement_expression or a throw_expression; and
• the switch expression is not required to have a type.

[gafter]

This is a draft spec for #2632

[mrlife]

Is this still planned and does it provide support for this?

https://dotnetfiddle.net/E2mrrC

[333fred]

Closing this out, it is tracked by #2632. If we decide to move forward with the proposal, we can check the spec in at that point.