I found (after another question here on StackOverflow) this interesting library written in Python which goal is the grammar parsing.
I read What is a metaclass in Python? and I tried to replicate the upper metaclass from the example and found that this doesn\'t work in all cases:
the code below is how i implement singleton with metaclass, and it works well class Test_MetaClass(type):
The code is as below, just the basic structure: class FooType(type): def __new__( cls, name, bases, classdict ):
After crashing with metaclasses i delved into the topic of metaprogramming in Python and I have a couple of questions that are, imho, n开发者_如何学编程ot clearly anwered in available docs.
I am writi开发者_如何转开发ng an internal DSL in Ruby.For this, I need to programmatically create named classes and nested classes.What is the best way to do so?I recon that there are two ways to do s
I\'m trying to change the dictionary of a python class so that everytime a function object is added to the dictionary I add an instance of my class where I redefine __call__ instead.
It is my understanding that it is difficult to create constructors of classes in Smalltalk and Objective-C. This is because the constructor can\'t be a message of a class instance because the class Cl
I\'m using argspec in a function that takes another function or method as the argument, and returns a tuple like this:
Is there a way in Groovy that I can add code to a constructor when a class is instantiated? I have a Groovy class (but I can\'t modify the source of this particular one), but I was hoping there was a
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