An attribute is another term for a field. It’s typically a public constant or a public variable that can be accessed directly. In this particular case, the array in Java is actually an object and you are accessing the public constant value that represents the length of the array.
Simple input[name=Sex][value=M] would do pretty nice. And it’s actually well-described in the standard doc: Multiple attribute selectors can be used to refer to several attributes of an element, or even several times to the same attribute. Here, the selector matches all SPAN elements whose “hello” attribute has exactly the value “Cleveland” and whose “goodbye” attribute has exactly the … Read more
You could use my ancient Bunch recipe, but if you don’t want to make a “bunch class”, a very simple one already exists in Python — all functions can have arbitrary attributes (including lambda functions). So, the following works: Whether the loss of clarity compared to the venerable Bunch recipe is OK, is a style decision I will of … Read more
You can’t do this with jQuery, it explicitly forbids it because IE doesn’t support it (check your console you’ll see an error. You have to remove the input and create a new one if that’s what you’re after, for example: You can give it a try here To be clear on the restriction, jQuery will not allow … Read more
Note that best practice in Python 2.7 is to use new-style classes (not needed with Python 3), i.e. Also, there’s a difference between an ‘object’ and a ‘class’. To build a dictionary from an arbitrary object, it’s sufficient to use __dict__. Usually, you’ll declare your methods at class level and your attributes at instance level, so __dict__ should be fine. For … Read more
The name attribute is used when sending data in a form submission. Different controls respond differently. For example, you may have several radio buttons with different id attributes, but the same name. When submitted, there is just the one value in the response – the radio button you selected. Of course, there’s more to it than that, but it will … Read more
You could try As you want to pass a new string array, you have to instantiate it – that’s done by new string[]. C# allows an initialization list with the initial contents of the array to follow in braces, i.e. { “a”, “b” }. EDIT: As correctly pointed out by Cory-G, you may want to make sure your actual instances … Read more
You may use the different accessors to communicate your intent to someone reading your code, and make it easier to write classes which will work correctly no matter how their public API is called. Here, I can see that I may both read and write the age. Here, I can see that I may only … Read more
Your NewsFeed class instance n doesn’t have a Canvas attribute. If you want to pass the Canvas defined in your Achtergrond class instance hoofdscherm to n, you can define it under the class definition for NewsFeed using __init__(): Then when you initialize your NewsFeed object as n, you can pass the Canvas instance from your Achtergrond class instance hoofdscherm: This is a solution to your current issue, but there are other errors in your code that you can see … Read more