
oop - What do __init__ and self do in Python? - Stack Overflow
Jul 8, 2017 · In this case, there are some benefits to allowing this: 1) Methods are just functions that happen defined in a class, and need to be callable either as bound methods with implicit …
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 …
Python class methods: when is self not needed - Stack Overflow
Jun 25, 2017 · 17 What is self? In Python, every normal method is forced to accept a parameter commonly named self. This is an instance of class - an object. This is how Python methods …
Explaining the 'self' variable to a beginner - Stack Overflow
6 self refers to the current instance of Bank. When you create a new Bank, and call create_atm on it, self will be implicitly passed by python, and will refer to the bank you created.
When to use self, &self, &mut self in methods? - Stack Overflow
Nov 24, 2019 · Say I want to implement a method that pretty prints the struct to stdout, should I take &self? I guess self also works? As you can see, this is exactly a case for &self. If you use …
Why do I get "TypeError: Missing 1 required positional argument: …
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.
ios - What is "self" used for in Swift? - Stack Overflow
Nov 10, 2014 · I am new to Swift and I'm wondering what self is used for and why. I have seen it in classes and structures but I really don't find them essential nor necessary to even mention …
How can I generate a self-signed SSL certificate using OpenSSL?
The W3C's WebAppSec Working Group is starting to look at the issue. See, for example, Proposal: Marking HTTP As Non-Secure. How to create a self-signed certificate with …
How to avoid explicit 'self' in Python? - Stack Overflow
Dec 31, 2009 · The "self" is the conventional placeholder of the current object instance of a class. Its used when you want to refer to the object's property or field or method inside a class as if …