From the world of PHP I have decided to give C# a go. I’ve had a search but can’t seem to find the answer of how to do the equivalent to this. $object = new Object(); $vars = get_class_vars(get_class($object)); foreach($vars as $var) { doSomething($object->$var); } I basically have a List of an object. The object … Read more
Does creating an object using reflection rather than calling the class constructor result in any significant performance differences? 14 Answers 14
This has got me stumped. I was trying to optimize some tests for Noda Time, where we have some type initializer checking. I thought I’d find out whether a type has a type initializer (static constructor or static variables with initializers) before loading everything into a new AppDomain. To my surprise, a small test of … Read more
I’m wondering how to convert a python ‘type’ object into a string using python’s reflective capabilities. For example, I’d like to print the type of an object print “My type is ” + type(someObject) # (which obviously doesn’t work like this) 5 Answers 5
Like the title says: Can reflection give you the name of the currently executing method. I’m inclined to guess not, because of the Heisenberg problem. How do you call a method that will tell you the current method without changing what the current method is? But I’m hoping someone can prove me wrong there. Update: … Read more
Given a string of a Python class, e.g. my_package.my_module.MyClass, what is the best possible way to load it? In other words I am looking for a equivalent Class.forName() in Java, function in Python. It needs to work on Google App Engine. Preferably this would be a function that accepts the FQN of the class as … Read more
$0 is the variable for the top level Ruby program, but is there one for the current method? 5 Answers 5
C#’s exception class has a source property which is set to the name of the assembly by default. Is there another way to get this exact string (without parsing a different string)? I have tried the following: catch(Exception e) { string str = e.Source; //”EPA” – what I want str = System.Reflection.Assembly.GetExecutingAssembly().FullName; //”EPA, Version=1.0.0.0, Culture=neutral, … Read more
I constantly hear how bad reflection is to use. While I generally avoid reflection and rarely find situations where it is impossible to solve my problem without it, I was wondering… For those who have used reflection in applications, have you measured performance hits and, is it really so bad? 13 Answers 13
I’m a little confused about the difference between the getFields method and the getDeclaredFields method when using Java reflection. I read that getDeclaredFields gives you access to all the fields of the class and that getFields only returns public fields. If this is the case, why wouldn’t you just always use getDeclaredFields? Can someone please … Read more
