Dmitry Jemerov
26 lines
859 B
Kotlin
Vendored
26 lines
859 B
Kotlin
Vendored
// !CHECK_TYPE
|
|
|
|
// KT-1410 Compiler does automatically infer type argument when using variance
|
|
//+JDK
|
|
package d
|
|
|
|
public fun <T> MutableCollection<out T>.filterToMy(result : MutableList<in T>, filter : (T) -> Boolean) : MutableCollection<out T> {
|
|
for (t in this){
|
|
if (filter(t)){
|
|
result.add(t)
|
|
}
|
|
}
|
|
return this
|
|
}
|
|
|
|
fun foo(result: MutableList<in String>, collection: MutableCollection<String>, prefix : String){
|
|
collection.filterToMy(result, {it.startsWith(prefix)})
|
|
}
|
|
|
|
fun test(result: MutableList<in Any>, collection: MutableCollection<String>, prefix : String){
|
|
val c = collection.filterToMy(result, {it.startsWith(prefix)})
|
|
checkSubtype<MutableCollection<out String>>(c)
|
|
}
|
|
|
|
//from library
|
|
fun String.startsWith(<!UNUSED_PARAMETER!>prefix<!>: String) : Boolean {<!NO_RETURN_IN_FUNCTION_WITH_BLOCK_BODY!>}<!> |