Proof-of-concept example of Swift using The Break/Continue Guard Clause pattern

.readme.txt

Here is an example of using what I am currently calling the Break/Continue Guard Clause pattern.

See:

1. https://mikeschinkel.me/2019/better-alternative-to-return-early-php-wordpress/
2. https://thatthinginswift.com/guard-statement-swift/

Break_Continue_guard_clause_pattern.swift

let Once = [1]

func submit() {
    var ok = false
    for only in Once {
        guard let name = nameField.text else {
            show("No name to submit")
            break
        }
        guard let address = addressField.text else {
            show("No address to submit")
            break
        }
        guard let phone = phoneField.text else {
            show("No phone to submit")
            break
        }
        sendToServer(name, address: address, phone: phone)
        ok = true
    }
    return ok
}