40 lines
1.3 KiB
Markdown
40 lines
1.3 KiB
Markdown
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---
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title: Go Pointers
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---
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## Go Pointers
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This is a stub. [Help our community expand it](https://github.com/freecodecamp/guides/tree/master/src/pages/go/go-pointers/index.md).
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[This quick style guide will help ensure your pull request gets accepted](https://github.com/freecodecamp/guides/blob/master/README.md).
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<!-- The article goes here, in GitHub-flavored Markdown. Feel free to add YouTube videos, images, and CodePen/JSBin embeds -->
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Pointers
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Go has pointers. A pointer holds the memory address of a value.
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The type *T is a pointer to a T value. Its zero value is nil.
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var p *int
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The & operator generates a pointer to its operand.
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i := 42
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p = &i
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The * operator denotes the pointer's underlying value.
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fmt.Println(*p) // read i through the pointer p
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*p = 21 // set i through the pointer p
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This is known as "dereferencing" or "indirecting".
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Unlike C, Go has no pointer arithmetic.
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#### More Information:
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<!-- Please add any articles you think might be helpful to read before writing the article -->
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* [A Tour of Go](https://tour.golang.org/moretypes/1)
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* [Go By Example](https://gobyexample.com/pointers)
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* [Golang Book](https://www.golang-book.com/books/intro/8)
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* [The Go Programming Language Specification](https://golang.org/ref/spec#Address_operators)
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