Swift 容易受到代码注入攻击吗

Swift是一种现代化的编程语言，由苹果公司推出，用于开发iOS、macOS、watchOS和tvOS应用程序。它的设计目标是提供一种安全、高效、易于使用的编程语言，以帮助开发人员构建可靠的应用程序。尽管Swift具有许多安全特性，但它仍然可能受到代码注入攻击的影响。

swift
func calculate(expression: String) -> Double {
    let expressionToEvaluate = "return " + expression
    let expressionClosure = { () -> Double in
        let result = NSExpression(format: expressionToEvaluate).expressionValue(with: nil, context: nil) as? Double ?? 0
        return result
    }
    return expressionClosure()
}
let userInput = "2 * 3 + 5"
let result = calculate(expression: userInput)
print("Result: \(result)")

swift
func fetchUserInfo(completion: @escaping (String?) -> Void) {
    let url = URL(string: "https://example.com/userinfo")!
    let task = URLSession.shared.dataTask(with: url) { (data, response, error) in
        if let data = data {
            let userInfo = String(data: data, encoding: .utf8)
            completion(userInfo)
        } else {
            completion(nil)
        }
    }
    task.resume()
}
fetchUserInfo { (userInfo) in
    if let userInfo = userInfo {
        print("User Info: \(userInfo)")
    } else {
        print("Failed to fetch user info")
    }
}

swift
import JavaScriptCore
let context = JSContext()
context?.evaluateScript("function add(a, b) { return a + b; }")
let addFunction = context?.objectForKeyedSubscript("add")
let result = addFunction?.call(withArguments: [2, 3])
print("Result: \(result?.toInt32() ?? 0)")