Dmitriy Novozhilov
f283f2db43
Also introduce few new diagnostics: - NONE_APPLICABLE more many inapplicable candidates - HIDDEN for visible candidates
11 lines
351 B
Kotlin
Vendored
11 lines
351 B
Kotlin
Vendored
// !LANGUAGE: +NewInference
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// !DIAGNOSTICS: -UNUSED_PARAMETER
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// WITH_RUNTIME
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fun <T> List<Option<T>>.flatten(): List<T> = <!AMBIGUITY!>flatMap<!> { <!UNRESOLVED_REFERENCE!>it<!>.<!NONE_APPLICABLE!>fold<!>(::emptyList, <!UNRESOLVED_REFERENCE!>::listOf<!>) }
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class Option<out T> {
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fun <R> fold(ifEmpty: () -> R, ifSome: (T) -> R): R = TODO()
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}
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