What is the difference between slice and array in go question bank 12?

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「 title 」GOLANG ROADMAP Community

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「 answer 」（engine）

array Is a fixed length array , It's a value type , If you assign a value or use it as a function parameter , In fact, the whole data will be copied again .

The length must be declared before use

arr := [5]int

and slice It's a reference type , It's an indefinite length , Always point to the underlying array array Data structure of . As a function parameter ,slice It's a pointer .

You do not need to specify the length when creating

var s []int
s := make([]int,10)
s :=[]int{1,2,3}