I have a list of (lots of) coordinates. coordinateList = [[1,2], [2,1], [3,5]]; These coordinates are unique and since I have a lot of them I want to be able to quickly check if a new coordinate is already in…
in Php, I would like to have my exception immutable: readonly class MyImmutableException extends Exception { } as you can see its not possible, it causes fatal error as Exception is not immutable. But I would like to have all…
I'm learning Elixir and I just got to the part about closures. When a language has closures, the first thing I usually do is try to make the closure algorithm. In JavaScript it looks something like this: let counter =…
For example: Object.defineProperty(Promise.prototype, 'onFinally', { get: () => {}, writable: false, }); or Object.freeze(Promise.prototype); These examples aren't work, is there a working way?
I have this object const product = { name: "Laptop", price: 1000, quantity: 5 }; console.log(product) //{ name: 'Laptop', price: 1000, quantity: 5 } but then I should to do this: const descriptors = { enumerable: false, writable: false };…
This question is more for understanding more how react handles and reacts to changes, than implementation, therefore I'm letting immutable-props-apprach go for a little bit. I'm trying to get the first element of an array and remove it from the…
How can I update a users claims if the map returned is an immutable map? This is example code from Firebase Auth docs on how to update claims: UserRecord user = FirebaseAuth.getInstance() .getUserByEmail("[email protected]"); Map<String, Object> currentClaims = user.getCustomClaims(); //This returns…
I would like to create a set of objects that exhibit the following behavior: Each has a BOOL property -- call it dataLocked -- that is initially false. Each has a set of stored properties whose values may be set,…