https://golang.k5kc.com/tags/internals/Recent content in internals on GolangHugo -- gohugo.ioen-usSun, 16 Aug 2020 00:10:00 +0530https://golang.k5kc.com/2020/08/16/the-internals-of-slice/Sun, 16 Aug 2020 00:10:00 +0530https://golang.k5kc.com/2020/08/16/the-internals-of-slice/There are 3 components of slice: a) Pointer: Points to the start position of slice in the underlying array; b) length (type is int): the number of the valid elements of the slice; b) capacity (type is int): the total number of slots of the slice. Check the following code: package main import ( "fmt" "unsafe" ) func main() { var s1 []int fmt.Println(unsafe.Sizeof(s1)) } The result is 24 on my 64-bit system (The pointer and int both occupy 8 bytes).