问题
In Java, we can build up expressions to be called using ScriptEngine. This is nice for building up frameworks based on a common naming convention. In JavaScript, there is of course eval(). Does Swift have some sort of mechanism for evaluating a string which contains a swift expression? I'm aware that this could be potentially abused; however, it would simplify my present development.
回答1:
No. Swift is a compiled language, and the runtime doesn't include the compiler. The iOS SDK doesn't provide a way to evaluate run-time Swift code.
You can execute JavaScript using JavaScriptCore, and JavaScriptCore makes it pretty easy to expose Swift objects and functions to the script. Maybe that will help you.
来源：https://stackoverflow.com/questions/26244069/is-the-a-scriptengine-or-eval-like-function-in-swift