Git Product home page Git Product logo

Comments (1)

ricky-zhf avatar ricky-zhf commented on July 19, 2024

这里的描述也感觉有点歧义。

果真改变了原始 slice 的底层数据。这里传递的是一个 slice 的副本,在 f 函数中,s 只是 main 函数中 s 的一个拷贝。在f 函数内部,对 s 的作用并不会改变外层 main 函数的 s。
但就结果来看,对 f函数内s 的作用改变了外层 main 函数的 s。
我理解其实传的不是slice的副本,而是slice指针的副本,因为slice本身就是引用类型变量,所以在f函数中修改s的值,slice的值也被修改。

func main() {
	slice := []int{0, 1, 2, 3, 4, 5, 6, 7, 8, 9}
	fmt.Printf("%p\n", slice)
	f(slice)
}
func f(s []int) {
	fmt.Printf("%p\n", s)
}

输出的结果:

0x1400001c0f0
0x1400001c0f0

from go-questions.

Related Issues (20)

Recommend Projects

  • React photo React

    A declarative, efficient, and flexible JavaScript library for building user interfaces.

  • Vue.js photo Vue.js

    🖖 Vue.js is a progressive, incrementally-adoptable JavaScript framework for building UI on the web.

  • Typescript photo Typescript

    TypeScript is a superset of JavaScript that compiles to clean JavaScript output.

  • TensorFlow photo TensorFlow

    An Open Source Machine Learning Framework for Everyone

  • Django photo Django

    The Web framework for perfectionists with deadlines.

  • D3 photo D3

    Bring data to life with SVG, Canvas and HTML. 📊📈🎉

Recommend Topics

  • javascript

    JavaScript (JS) is a lightweight interpreted programming language with first-class functions.

  • web

    Some thing interesting about web. New door for the world.

  • server

    A server is a program made to process requests and deliver data to clients.

  • Machine learning

    Machine learning is a way of modeling and interpreting data that allows a piece of software to respond intelligently.

  • Game

    Some thing interesting about game, make everyone happy.

Recommend Org

  • Facebook photo Facebook

    We are working to build community through open source technology. NB: members must have two-factor auth.

  • Microsoft photo Microsoft

    Open source projects and samples from Microsoft.

  • Google photo Google

    Google ❤️ Open Source for everyone.

  • D3 photo D3

    Data-Driven Documents codes.