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Why does Python code use len() function instead of a length method?

I know that python has a len() function that is used to determine the size of a string, but I was wondering why it's not a method of the string object. ...
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What are the various “Build action” settings in Visual Studio project properties and what do they do

For the most part, you just take whatever Visual Studio sets it for you as a default... I'm referring to the BuildAction property for each file selected in Solution Explorer. There are a number of options and it's difficult to know what each one of them will do. ...
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When and why should I use fragments in Android applications? [duplicate]

I often need the different parts of my applications to have their own special behavior and UI, and I don't know how fragments can help. In most cases, I think it is quicker to create 2 different activities (e.g., 1 for tablets and 1 for handsets), and to share the common behaviors and events in a th...
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Proper way to handle multiple forms on one page in Django

I have a template page expecting two forms. If I just use one form, things are fine as in this typical example: 10 Answers...
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How do you determine the size of a file in C?

How can I figure out the size of a file, in bytes? 14 Answers 14 ...
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What are the rules for JavaScript's automatic semicolon insertion (ASI)?

Well, first I should probably ask if this is browser dependent. 6 Answers 6 ...
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What is the difference between the template method and the strategy patterns?

Can someone please explain to me what is the difference between the template method pattern and the strategy pattern is? 16...
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Dynamically set local variable [duplicate]

How do you dynamically set local variable in Python (where the variable name is dynamic)? 7 Answers ...
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What is the purpose of the word 'self'?

What is the purpose of the self word in Python? I understand it refers to the specific object created from that class, but I can't see why it explicitly needs to be added to every function as a parameter. To illustrate, in Ruby I can do this: ...
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structure vs class in swift language

From Apple book "One of the most important differences between structures and classes is that structures are always copied when they are passed around in your code, but classes are passed by reference." ...