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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
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 \?
What is SELF JOIN and when would you use it? [duplicate] You use a self join when a table references data in itself E g , an Employee table may have a SupervisorID column that points to the employee that is the boss of the current employee To query the data and get information for both people in one row, you could self join like this: select e1 EmployeeID, e1 FirstName, e1 LastName, e1 SupervisorID, e2 FirstName as SupervisorFirstName, e2 LastName