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Anna Kozlova afa0706bfc java highlighting: provide better incompatible types message on failed inference
GitOrigin-RevId: 5f97ec808f753d9ca40c417704ec93a802512745
2019-07-08 12:04:21 +03:00

31 lines
775 B
Java

import java.util.Arrays;
import java.util.List;
import java.util.function.Function;
import static java.util.stream.Collectors.toList;
abstract class FooBar<M> {
abstract void collect(List<? extends M> collector);
void foo(FooBar<?> objectStream) {
objectStream. collect(toList( ));
}
static <T> List<T> toList() {
return null;
}
}
class Test {
<T> List<List<Object>> foo(List<T> objects, Function<T, ?>... functions) {
return <error descr="Incompatible types. Found: 'java.util.List<java.util.List<capture<?>>>', required: 'java.util.List<java.util.List<java.lang.Object>>'">objects.stream()
.map(object -> Arrays.stream(functions)
.map(fn -> fn.apply(object))
.collect(toList()))
.collect(toList());</error>
}
}