Swift 与 Objective-C 的性能比较

Swift 与 Objective-C 是两种在 iOS 和 macOS 开发中常用的编程语言。它们各自具有不同的特点和优势，包括性能。本文将探讨 Swift 和 Objective-C 的性能比较，并通过案例代码来展示它们之间的差异。

swift
func sumOfNumbers() -> Int {
    var sum = 0
    for i in 1...1000000 {
        sum += i
    }
    return sum
}
let result = sumOfNumbers()
print(result)

objective-c
int sumOfNumbers() {
    int sum = 0;
    for (int i = 1; i <= 1000000; i++) {
        sum += i;
    }
    return sum;
}
int result = sumOfNumbers();
NSLog(@"%d", result);

swift
func fibonacci(_ n: Int) -> Int {
    if n <= 1 {
        return n
    }
    return fibonacci(n - 1) + fibonacci(n - 2)
}
let result = fibonacci(20)
print(result)

objective-c
int fibonacci(int n) {
    if (n <= 1) {
        return n;
    }
    return fibonacci(n - 1) + fibonacci(n - 2);
}
int result = fibonacci(20);
NSLog(@"%d", result);