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Proposal: Result Codable conformance and async init #2741

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Proposal: Result Codable conformance and async init #2741

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ktoso
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@ktoso ktoso commented Mar 17, 2025

This is a proposal to add:

  • Codable conformance to Result when Failure and Success are Codable
  • async catching: init

The combination of those allows "catching" an async computation and have the result be Codable if the error also was.

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ktoso commented Mar 17, 2025

Thanks for the fixups :)

@rjmccall rjmccall added the LSG Contains topics under the domain of the Language Steering Group label Mar 17, 2025
grynspan
grynspan reviewed Mar 20, 2025
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proposals/NNNN-result-codable-and-async-init.md
///
/// - Parameter body: A potentially throwing asynchronous closure to evaluate.
@_alwaysEmitIntoClient
public init(catching body: () async throws(Failure) -> Success) async {
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Yes please!

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+1

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@ktoso @jakepetroules @grynspan @YOCKOW @j-f1 @rjmccall