“public” or “private” attribute in Python ? What is the best way?

Typically, Python code strives to adhere to the Uniform Access Principle. Specifically, the accepted approach is: Expose your instance variables directly, allowing, for instance, foo.x = 0, not foo.set_x(0) If you need to wrap the accesses inside methods, for whatever reason, use @property, which preserves the access semantics. That is, foo.x = 0 now invokes … Read more

Error in Swift class: Property not initialized at super.init call

Quote from The Swift Programming Language, which answers your question: “Swift’s compiler performs four helpful safety-checks to make sure that two-phase initialization is completed without error:” Safety check 1 “A designated initializer must ensure that all of the “properties introduced by its class are initialized before it delegates up to a superclass initializer.” Excerpt From: … Read more

Remove properties from objects (JavaScript)

To remove a property from an object (mutating the object), you can do it like this: Demo For anyone interested in reading more about it, Stack Overflow user kangax has written an incredibly in-depth blog post about the delete statement on their blog, Understanding delete. It is highly recommended. If you’d like a new object with all the keys of the original … Read more