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- oop - Why do you need explicitly have the self argument in a Python . . .
By making the self reference explicit, you're free to refer to any object by that self reference Also, such a way of playing with classes at runtime is harder to do in the more static languages - not that's it's necessarily good or bad It's just that the explicit self allows all this craziness to exist
- What is the purpose of the `self` parameter? Why is it needed?
For a language-agnostic consideration of the design decision, see What is the advantage of having this self pointer mandatory explicit? To close debugging questions where OP omitted a self parameter for a method and got a TypeError, use TypeError: method () takes 1 positional argument but 2 were given instead If OP omitted self in the body of the method and got a NameError, consider How can
- What difference does it make to use self to define a member in a . . .
A x is a class variable B 's self x is an instance variable i e A 's x is shared between instances It would be easier to demonstrate the difference with something that can be modified like a list:
- What does \\. self actually do in Swift SwiftUI? - Stack Overflow
I think it is setting the id for each list item as each item in the numbers array? Correct me if wrong - but is each id being set as whatever Int is in each entry of the numbers array? If so, then what does \ actually do when typing \ self and what does self actually do in combination with \?
- Python self keyword - Stack Overflow
9 First, Python's self is not a keyword, it's a coding convention, the same as Python's cls Guido has written a really detailed and valuable article about the origin of Python's support for class, and in that article, Guido explains why use self and cls, and why they are necessary
- Why do I get TypeError: Missing 1 required positional argument: self?
See Why do I get 'takes exactly 1 argument (2 given)' when trying to call a method? for the opposite problem
- Difference between cls and self in Python classes?
Why is cls sometimes used instead of self as an argument in Python classes? For example: class Person: def __init__(self, firstname, lastname): self firstname = firstname self
- Difference between this and self in JavaScript - Stack Overflow
Everyone is aware of this in javascript, but there are also instances of self encountered in the wild, such as here So, what is the difference between this and self in JavaScript?
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