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$ curl repovive.com/roadmaps/go/arrays-slices/nil-slices

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$ curl repovive.com/roadmaps/go/arrays-slices/nil-slices

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Nil Slices - Arrays & Slices | Go | Repovive

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Go10 sections · 431 units20h total

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Nil Slices

Slices without data

A nil slice has no underlying array. Its length and capacity are both $0$ :

var s []int       // nil slice
fmt.Println(s == nil)  // true
fmt.Println(len(s))    // 0

You can append to a nil slice. The append function handles the allocation. An empty slice []int{} is not nil but also has length $0$ . For most purposes, nil and empty slices behave the same.