F# Type Provider compiled as *.exe file

F# Type Provider compiled as *.exe file

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F# Type Provider compiled as *.exe file
Tag : fhash , By : Bjørn Lyngwa
Date : November 25 2020, 07:22 PM

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Inter Type Declaration on Compiled Class File

Tag : development , By : mylonov
Date : March 29 2020, 07:55 AM
wish helps you Update:
Oh my goodness, you do not need reflection to access members or execute methods. Eclipse shows errors in the editor, but you may just ignore them, the code compiles and runs fine anyway. So the aspect is really much more strightforward and simple:
public aspect LTWAspect {
    public static String Application.staticField = "value of static field";
    public String Application.normalField = "value of normal field";

    public void Application.myMethod() {

    void around() : execution(void Application.main(..)) {
        System.out.println("around before");
        System.out.println("around after");
        new Application().myMethod();
public class Application {
    public static void main(String[] args) {
import org.aspectj.lang.SoftException;

public aspect LTWAspect {
    public static String Application.staticField = "value of static field";
    public String Application.normalField = "value of normal field";

    public void Application.myMethod() {
        try {
        } catch (Exception e) {
            throw new SoftException(e);

    void around() : execution(void Application.main(..)) {
        System.out.println("around before");
        System.out.println("around after");
        try {
            Application.class.getDeclaredMethod("myMethod", null).invoke(new Application());
        } catch (Exception e) {
            throw new SoftException(e);
around before
around after
value of static field
value of normal field

Type Erasure in Java contradictory: how does the compiled class file ensures type checking?

Tag : java , By : Derek
Date : March 29 2020, 07:55 AM
I wish this helpful for you There are no type checks at runtime except for the erased upper bounds. Java Generics is all about compiler checking.
On the other hand, maybe your question is only about how can the compiler do its checks if the type parameter information is gone from the bytecode. The answer to that is that it is not gone from the classfile as a whole: it is attached as meta-data, available to the compiler (as well as the Reflection API), but irrelevant to the executing code.

TYPE_USE annotations on generic type not being compiled into class file

Tag : java , By : Juice
Date : March 29 2020, 07:55 AM
I wish this help you The annotations are compiled into the class file. I suspect that whatever tool you used to inspect the class file is faulty.
Here is a MWE:
import java.util.List;
import java.lang.annotation.ElementType;
import java.lang.annotation.Target;

@interface Valid{}

public class GroupPayload<T> {
    List<@Valid T> data;
javac GroupPayload.java
javap -v GroupPayload.class
   #9 = Utf8               LValid;
  java.util.List<T> data;
      0: #9(): FIELD, location=[TYPE_ARGUMENT(0)]
Classfile /home/mernst/GroupPayload.class
  Last modified Jan 16, 2020; size 515 bytes
  MD5 checksum 3db07417a8da20b35032650b64e9ffce
  Compiled from "GroupPayload.java"
public class GroupPayload<T extends java.lang.Object> extends java.lang.Object
  minor version: 0
  major version: 52
Constant pool:
   #1 = Methodref          #3.#22         // java/lang/Object."<init>":()V
   #2 = Class              #23            // GroupPayload
   #3 = Class              #24            // java/lang/Object
   #4 = Utf8               data
   #5 = Utf8               Ljava/util/List;
   #6 = Utf8               Signature
   #7 = Utf8               Ljava/util/List<TT;>;
   #8 = Utf8               RuntimeInvisibleTypeAnnotations
   #9 = Utf8               LValid;
  #10 = Utf8               <init>
  #11 = Utf8               ()V
  #12 = Utf8               Code
  #13 = Utf8               LineNumberTable
  #14 = Utf8               LocalVariableTable
  #15 = Utf8               this
  #16 = Utf8               LGroupPayload;
  #17 = Utf8               LocalVariableTypeTable
  #18 = Utf8               LGroupPayload<TT;>;
  #19 = Utf8               <T:Ljava/lang/Object;>Ljava/lang/Object;
  #20 = Utf8               SourceFile
  #21 = Utf8               GroupPayload.java
  #22 = NameAndType        #10:#11        // "<init>":()V
  #23 = Utf8               GroupPayload
  #24 = Utf8               java/lang/Object
  java.util.List<T> data;
    descriptor: Ljava/util/List;
    Signature: #7                           // Ljava/util/List<TT;>;
      0: #9(): FIELD, location=[TYPE_ARGUMENT(0)]

  public GroupPayload();
    descriptor: ()V
    flags: ACC_PUBLIC
      stack=1, locals=1, args_size=1
         0: aload_0
         1: invokespecial #1                  // Method java/lang/Object."<init>":()V
         4: return
        line 8: 0
        Start  Length  Slot  Name   Signature
            0       5     0  this   LGroupPayload;
        Start  Length  Slot  Name   Signature
            0       5     0  this   LGroupPayload<TT;>;
Signature: #19                          // <T:Ljava/lang/Object;>Ljava/lang/Object;
SourceFile: "GroupPayload.java"

Type provider and big XML file

Tag : xml , By : chad
Date : March 29 2020, 07:55 AM

Understanding Type in Compiled Scala File

Tag : scala , By : rhyhann
Date : March 29 2020, 07:55 AM
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