alef 0.113.4

Opinionated polyglot binding generator for Rust libraries
Documentation 
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{{ declaration }}
let failure = SampleError.notFound(message: "missing", source: nil)
switch failure {
case .notFound(let message, let source):
    precondition(message == "missing" && source == nil)
default:
    preconditionFailure("wrong error case")
}