How many bytes does int in golang occupy?

int is a signed integer type whose size is at least 32 bits. It's an exact type, not an alias for int32. (Recommended: go video tutorial)

int is not int32, how many bytes does int occupy in the memory? It’s not official yet, let’s test it.

GOARCH="amd64"

package mainimport (
	"fmt"
	"unsafe"
)func main() {	i := int(1)
	fmt.Println(unsafe.Sizeof(i)) // 4
	j := 1
	fmt.Println(unsafe.Sizeof(j)) // 4
	u := uint(1)
	fmt.Println(unsafe.Sizeof(u)) // 4}

Can it be considered that int is 4 bytes? I dare not think so, GoLang supports multiple platform architectures. If there are clear requirements for size, then use int32 or the like.

Supplement: As the Go version changes, this is indeed changing, so how many bytes it occupies depends on the specific version

For more golang knowledge, please pay attention togolang tutorial column.

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