传值(pass-by-value)和传引用(pass-by-reference)之间的区别是什么?

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英文:

Difference between pass-by-value and pass-by-reference?

问题

我是你的中文翻译助手,我会帮你翻译以下内容:

我是新来的,正在学习编程语言Go。我之前使用的是面向对象的编程语言,所以在传值和传引用的概念上有些困惑。

请帮忙解释一下这两者的区别,并提供使用这两种方法的编程语言的示例。谢谢!

英文:

I'm new here, I'm learning the programming language Go. I previously departed from an object-oriented programming language, so I'm a bit confused when it comes to pass-by-value and pass-by-reference topics

Please help to explain the difference between the two and examples of each programming language that uses the method. Thank You

答案1

得分: 3

如果你按值传递某个东西,你传递的是对象所代表的值。相反,如果你按引用传递某个东西,你传递的是对象本身的引用。

例如,考虑这个示例变量 a:

var a = "test"

按值传递 a 意味着传递的是 "test"。如果你修改了传递的值,不会影响到 a。
然而,如果你按引用传递 a,你传递的是 a。这意味着你传递的是对原始变量 a 的引用,对它进行修改也会修改 a。

英文:

If you pass something by value, you're passing the value the object represents. In contrast, if you pass something by reference, you're passing a reference to the object itself.

For example, take this sample variable a:

var a = "test"

Passing a by value means passing "test". If you modify what you passed, it will not affect a. <br>
However, if you pass a by reference, you're passing a. This means that what you passed is a reference to the original variable a directly, and modifying it modifies a as well.

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  • 本文由 发表于 2022年2月24日 16:41:11
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