[go-nuts] about interface data pointer

[刘桂祥]

package main


import (
    "fmt"
)
func main() {
    a := interface{}(100)
    println(&a, a)
    fmt.Sprint(a)
}

go run x.go  the output:

0xc42003bf18 (0x89040,0xc42000a2c0)

I just want to ask 0xc42000a2c0 as the a (interface{}) 's data pointer is 
point to where ? heap ?

also I test this:
func BenchmarkFmtEscap3(b *testing.B) {
    b.ReportAllocs()


    for i := 0; i < b.N; i++ {
        a := interface{}(100)
        fmt.Sprint(a)
    }
}

BenchmarkFmtEscap3-4     10000000       141 ns/op      16 B/op       2 
allocs/op

why is 2 allocs and 16bytes ??

-- 
You received this message because you are subscribed to the Google Groups 
"golang-nuts" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to golang-nuts+unsubscr...@googlegroups.com.
For more options, visit https://groups.google.com/d/optout.