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Erroneous conversion to lambda expression in Java


Erroneous conversion to lambda expression in Java

By : Laurie Cavey
Date : November 20 2020, 11:01 PM
Does that help Edit
I just tried your example on IntelliJ (sorry, I don't have NetBeans installed) and it generates the proper code and runs fine:
code :
new ChoiceBox<String>()
    .valueProperty()
    .addListener((ov, t, t1) -> System.out.println(t1));


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C#: No implicit conversion between 'lambda expression' and 'lambda expression'?

C#: No implicit conversion between 'lambda expression' and 'lambda expression'?


By : Zaerl
Date : March 29 2020, 07:55 AM
will help you The type of the conditional expression has to be inferred as a whole - and lambda expressions always have to be converted to a specific delegate or expression tree type.
In your latter two examples, the compiler knows what it's trying to convert the lambda expression to. In the first example, it tries to work out the type of the whole conditional expression first.
code :
protected override Func<Stream> GetStream()
{
    return someBool
        ? (Func<Stream>)
          (() => EmbeddedResourceExtractor.GetFile("SomeFile1.ext"))
        : () => EmbeddedResourceExtractor.GetFile("SomeFile2.ext");
}
protected override Func<Stream> GetStream()
{
    return () => someBool
          ? EmbeddedResourceExtractor.GetFile("SomeFile1.ext")
          : EmbeddedResourceExtractor.GetFile("SomeFile2.ext");
}
protected override Func<Stream> GetStream()
{
    string name = someBool ? "SomeFile1.ext" : "SomeFile2.ext";
    return () => EmbeddedResourceExtractor.GetFile(name);
}
Type of conditional expression cannot be determined because there is no implicit conversion between 'lambda expression'

Type of conditional expression cannot be determined because there is no implicit conversion between 'lambda expression'


By : Ratiranjan Parida
Date : March 29 2020, 07:55 AM
Hope that helps The compiler doesn't infer delegate types for lambda expressions. You need to specify the delegate type using a cast in the first ternary clause:
code :
var excludeCollectionCategory = (ui == UIRequestor.ProjectNotes) 
    ? (Func<Note, bool>)(x => x.NoteCategory != "Collections")
    : x => true;
Recursive function call conversion to lambda expression in Tree Implementation java

Recursive function call conversion to lambda expression in Tree Implementation java


By : vikas
Date : March 29 2020, 07:55 AM
wish helps you Assuming your question is how to "translate" getNumberOfnodeRecursiveFunc to lambdas (the code seems correct so I guess it's what you're asking), a possible solution could be:
code :
private int getNumberOfnodeRecursiveFunc(GenericTreeNode<T> node) {
        return node.getNumberOfChildren() + node.getChildren().stream().collect(Collectors.summingInt(Test::getNumberOfnodeRecursiveFunc));
    }
private int getNumberOfnodeRecursiveFunc(MyNode node) {
  return node.getNumberOfChildren() + node.getChildren().stream().collect(Collectors.summingInt(n - > getNumberOfnodeRecursiveFunc(n)));
}
Lambda Expression Java Conversion

Lambda Expression Java Conversion


By : Heddy
Date : March 29 2020, 07:55 AM
help you fix your problem Im quite new to the new Java features and was wondering how I could convert this bit of code into a lambda expression? , What your IDE means is likely:
code :
(p) -> new ReadOnlyStringWrapper(p.getValue());
Lambda expression conversion in Java?

Lambda expression conversion in Java?


By : F.O. Bossert
Date : March 29 2020, 07:55 AM
To fix the issue you can do You provide quite a simple example for using lambdas
But just for learning's sake, it can be rewritten in something like this:
code :
IntStream.range(0, 10).forEach(
    n -> { System.out.println(n); }
);
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