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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 ...

node.js - NPM self_signed_cert_in_chain - Stack Overflow
NPM self_signed_cert_in_chain Asked 9 years, 10 months ago Modified 4 months ago Viewed 205k times

git - SSL certificate problem: self signed certificate in certificate ...
The reason was an SSL certificate problem: 'self-signed certificate in certificate chain.'" Protected question. To answer this question, you need to have at least 10 reputation on this site (not counting the ). The reputation requirement helps protect this question from spam and non-answer activity.

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 OpenSSL The commands below and the configuration file create a self-signed certificate (it also shows you how to create a signing request).

oop - What do __init__ and self do in Python? - Stack Overflow
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 self passing or as plain functions with explicit self passing. 2) Making classmethod s and staticmethod s means you want to be able to rename and omit self respectively.

nodejs - error self signed certificate in certificate chain
What I get is Error: self signed certificate in certificate chain. When I use Postman I can import the client certificate and key and use it without any 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.

javascript - var self = this? - Stack Overflow
You should avoid self as there is a window.self object and you could end up using that accidentally if you forget to declare your own self var (e.g. when moving some code around). This can be annoying to spot/debug. Better to use something like _this.

class - Python - self, no self and cls - Stack Overflow
The same way self is used to access an attribute inside the object (class) itself. So if you didn't prefix a variable with self in a class method, you wouldn't be able to access that variable in other methods of the class, or outside of the class.

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 \?