[Proposal]: Collection Expression Arguments

[CyrusNajmabadi]

Collection Expression Arguments

• Specification: https://github.com/dotnet/csharplang/blob/main/proposals/collection-expression-arguments.md
• Discussion: [Proposal]: Collection Expression Arguments #8886

Summary

Introduce a way for users to create collection expressions (e.g. [a, b, c]) while also passing along arguments to the respective creation construction for that collection.

An example strawman syntax for this would be:

List<string> values = [args(capacity: 32); a, b, c];

Design meetings

• https://github.com/dotnet/csharplang/blob/main/meetings/2024/LDM-2024-12-09.md#collection-expression-arguments