I think the key points about CodeDOM and Reflection.Emit are following: CodeDom generates C# source code and is usually used when generating code to be included as part of a solution and compiled in the IDE (for example, LINQ to SQL classes, WSDL, XSD all work this way). In this scenario you can also use … Read more
I don’t think this is the good way to solve this kind of issue. A better way is to put the version information in a properties file that will be read by your Java program: Your properties file will contain the following line: myapp.version=${project.version} Then, in your pom.xml, indicate that the file will be filtered … Read more
You need a “unique supply”. The usual way to do this in Haskell is by threading a counter through the State monad, which automates the plumbing problem you describe.
I don’t know how to invoke the disassembler from C++ code, but there is a quick-and-dirty way to get a disassembly from the shell. First, compile v8 with disassembler support: scons [your v8 build options here] disassembler=on sample=shell Now you can invoke the shell with the “–print_code” option: ./shell –print_code hello.js Which should give you … Read more
I already faced this problem several weeks ago. You simply have to use com.example.R (where com.example is the name of your package), because your IDE thinks that you are using android.R by default. Try this out.
Here is a working “hello world” made with ObjectWeb ASM (a library which I recommend): package hello; import java.lang.reflect.Method; import org.objectweb.asm.ClassWriter; import org.objectweb.asm.Label; import org.objectweb.asm.MethodVisitor; import org.objectweb.asm.Opcodes; public class HelloWorldASM implements Opcodes { public static byte[] compile(String name) { ClassWriter cw = new ClassWriter(0); MethodVisitor mv; cw.visit(V1_6, ACC_PUBLIC + ACC_SUPER, “hello/HelloWorld”, null, “java/lang/Object”, null); cw.visitSource(“HelloWorld.java”, … Read more
To start, look at the JavaCompiler API. Basically: Create the Java class in a string. Put the string into class that extends SimpleJavaFileObject. Compile using a JavaCompiler instance. Finally, call the methods the new class. Here is an example that works with JDK6+: import java.io.IOException; import java.io.PrintWriter; import java.io.StringWriter; import java.lang.reflect.InvocationTargetException; import java.net.URI; import java.util.Arrays; … Read more
how do I tag Eric Lippert? If you have something you want brought to my attention you can use the “contact” link on my blog. I’m still utterly confused why the C# compiler bothers to check for collisions between namespaces and types in contexts where it makes no sense for a namespace to exist. Indeed, … Read more
If you really want to do something like that, you can do it through bytecode generation using ASM or some other library. Here is code that will generate a class named “foo.bar.ClassWithFields” that contains fields “var0” to “var99”. Of course there is no way other than reflection to access those fields, because they don’t exist … Read more
In .NET, you could extract just the digits from the string. Using Linq like this: string justNumbers = new String(text.Where(Char.IsDigit).ToArray()); Don’t forget to include using System.Linq