Useful iOS Things GitHub Repository (github.com)

Some examples (just going down the readme):

> The observer pattern lets one object observe changes on another object. Apple added language-level support for this pattern in Swift 5.1 with the addition of Publisher in the Combine framework.

- Apple did not add language-level support, the Combine framework is a framework

- NSNotification center was added in iOS 2.0

    extension ViewController: ImagePickerDelegate {
        func didSelect(image: UIImage?) {
            self.yourImageView.image = image
            self.dismiss(animated: true, completion: nil)
        }
    }

- No you're not: what about error handling, permissions, etc.

- There are dozens of libraries for this on Github that do the above and more, why not use them?

    func getDocumentDirectoryPath() -> URL {
        guard let url = useFileHandler.urls(for: .documentDirectory,
                                            in: .userDomainMask).first else { fatalError("Can't find path") }
        return url
    }
    
    func createFile(resourceName: String, fileExtension: String) {
        let fileURLProject = Bundle.main.path(forResource: resourceName, ofType: fileExtension)
        let folderUrl = getDocumentDirectoryPath()
        let fileUrl = folderUrl.appendingPathComponent("\(resourceName).\(fileExtension)")
        do {
            try useFileHandler.copyItem(atPath: fileURLProject ?? "", toPath: fileUrl.path)
        } catch {
            print(error)
        }
    }

- print(error) doesn't exactly inspire confidence

- Again, plenty of libraries exist for this (and Foundation's FileManager isn't that verbose anyway)

    struct User: Codable {
        var first_name: String
        var last_name: String
        var country: String
    }

- This section would benefit from a concrete example of JSON<->Codable<->JSON

...and so on. I hope I don't come off too critical here, I just think the author would be better off building something more akin to an Awesome list of links to blog posts, as opposed to a single source of truth of surface-level information where where the bar of knowledge is much higher.

I use C/C++ on iOS and I'll abandon the platform if they ever remove the support.