No, you can’t, basically. You can limit it to struct vs class vs interface, that is about it. Plus: you can’t add attributes to types outside your code anyway (except for via TypeDescriptor, which isn’t the same).
Many of the answers here have become somewhat obsolete, so here goes a brief summary of what happened with the scoped attribute. Originally (before HTML5), <style> was not “valid” outside <head>, but was supported by most or all browsers. “not valid” means that validators would complain about it, and the specs (W3C’s HTML 4 and … Read more
This seems to work (thanks Evan, putting it here so the line is in context): buffer = “path/filename.zip” # zip filename to write (or file-like object) name = “folder/data.txt” # name of file inside zip bytes = “blah blah blah” # contents of file inside zip zip = zipfile.ZipFile(buffer, “w”, zipfile.ZIP_DEFLATED) info = zipfile.ZipInfo(name) info.external_attr … Read more
You are right, the documentation is not very clear in this area, especially since attributes are not so complicated. If you define a subroutine attribute, like this: sub some_method :Foo { } Perl will while compiling your program (this is important) look for the magic sub MODIFY_CODE_ATTRIBUTES in the current package or any of its … Read more
You shouldn’t be using onClick any more if you are using jQuery. jQuery provides its own methods of attaching and binding events. See .click() $(document).ready(function(){ var js = “alert(‘B:’ + this.id); return false;”; // create a function from the “js” string var newclick = new Function(js); // clears onclick then sets click using jQuery $(“#anchor”).attr(‘onclick’, … Read more
There is a builtin function for this: setattr(test, attr_name, 10) Reference: http://docs.python.org/library/functions.html#setattr Example: >>> class a(object): pass >>> a.__dict__[‘wut’] = 4 Traceback (most recent call last): File “<stdin>”, line 1, in <module> TypeError: ‘dictproxy’ object does not support item assignment >>> setattr(a, ‘wut’, 7) >>> a.wut 7
Add the __iter__ to the metaclass instead of the class itself (assuming Python 2.x): class Foo(object): bar = “bar” baz = 1 class __metaclass__(type): def __iter__(self): for attr in dir(self): if not attr.startswith(“__”): yield attr For Python 3.x, use class MetaFoo(type): def __iter__(self): for attr in dir(self): if not attr.startswith(“__”): yield attr class Foo(metaclass=MetaFoo): bar … Read more
For this particular purpose, $(“span”).show() should be good enough.
This is one possible way to define an XSD matching your XML; when learning XSD, you could enroll the help of a tool that infers the XSD for you, starting from one or more XML sample files. <?xml version=”1.0″ encoding=”utf-8″?> <!–W3C Schema generated by QTAssistant/W3C Schema Refactoring Module (http://www.paschidev.com)–> <xsd:schema attributeFormDefault=”unqualified” elementFormDefault=”qualified” xmlns:xsd=”http://www.w3.org/2001/XMLSchema”> <xsd:element name=”component”> … Read more
In the .NET Framework, attributes can be used for many reasons — like Defining which classes are serializable Choosing which methods are exposed in a Web service Attributes allow us to add descriptions to classes, properties, and methods at design time that can then be examined at runtime via reflection. Consider this example: Say you … Read more