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When a type (class, enum, or struct) is annotated @main, it is required to provide a function with the following signature: static func main() -> () That function will be called when the executable the type is defined within is launched.
20 lines
458 B
Swift
20 lines
458 B
Swift
// RUN: %target-swift-frontend -typecheck -parse-as-library -verify %s
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@main // expected-error{{'main' attribute can only apply to one type in a module}}
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struct MyMain1 {
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static func main() {
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}
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}
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@main // expected-error{{'main' attribute can only apply to one type in a module}}
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enum MyMain2 {
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static func main() {
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}
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}
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@main // expected-error{{'main' attribute can only apply to one type in a module}}
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class MyMain3 {
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static func main() {
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}
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}
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