Assembly code normally does mean the human readable form of a machine’s native language (the so-called machine language). Byte code on the other hand is normally a language that can be interpreted by a byte code interpreter — so it is not the processor’s native language. Why the confusion then? You can’t compare Assembly language … Read more
This is all very simple. First, you load the Lua script without executing it. It does not matter if you have connected the Lua state with your exported functions; all you’re doing is compiling the script file. You could use luaL_loadfile, which uses C-standard library functions to read a file from disk and load it … Read more
Suggested reading: the JVM spec. You might also want to play with BCEL – there are other libraries around for manipulating bytecode, but that’s probably the best known one.
Hank Shiffman from SGI said (a long time ago, but it’s till true): There are three advantages of Java using byte code instead of going to the native code of the system: Portability: Each kind of computer has its unique instruction set. While some processors include the instructions for their predecessors, it’s generally true that … Read more
MacOs 10.14.4 update enables system shortcut Shift-Cmd-A Workaround: Open “System Preferences | Keyboard | Shortcuts | Services” Disable “Search man Page Index in Terminal” (or change the keybinding)
C-u 0 M-x byte-recompile-directory will compile all the .el files in the directory and in all subdirectories below. The C-u 0 part is to make it not ask about every .el file that does not have a .elc counterpart.
This is because x could have a __mul__ method with side-effects. x * 10 * 10 calls __mul__ twice, while x * 100 only calls it once: >>> class Foo(object): … def __init__ (self): … self.val = 5 … def __mul__ (self, other): … print “Called __mul__: %s” % (other) … self.val = self.val * … Read more
You could try Jasmin! .class public HelloWorld .super java/lang/Object .method public static main([Ljava/lang/String;)V .limit stack 3 .limit locals 1 getstatic java/lang/System/out Ljava/io/PrintStream; ldc “Hello World.” invokevirtual java/io/PrintStream/println(Ljava/lang/String;)V return .end method You compile it using: > java -jar jasmin.jar hello.j And then you run it like any class: > java HelloWorld Hello World. Update I see … Read more
I’m not an expert, but here is my understanding: Traits are compiled into an interface and corresponding class. trait Foo { def bar = { println(“bar!”) } } becomes the equivalent of… public interface Foo { public void bar(); } public class Foo$class { public static void bar(Foo self) { println(“bar!”); } } Which leaves … Read more
Compatibility notes for various versions: Java 1.4 Java 5 Java 6 Java 7 Java 8 The first major hiccup I remember was the introduction of assert in Java 1.4. It affected a lot of JUnit code.