golang2021数据格式（94）unsafe修改私有成员

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package main

import (
            "fmt"
            "unsafe"
    )

type   Programmer struct {
            name string
            language string
    }

func   main() {
            p := Programmer{"stefno", "go"}
            fmt.Println(p)
           
            name := (*string)(unsafe.Pointer(&p))
            *name = "qcrao"

lang := (*string)(unsafe.Pointer(uintptr(unsafe.Pointer(&p))   + unsafe.Offsetof(p.language)))
            *lang = "Golang"

fmt.Println(p)
    }

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{stefno go}
    {qcrao Golang}

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type   Programmer struct {
            name string
            age int
            language string
    }

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func   main() {
            p := Programmer{"stefno", 18, "go"}
            fmt.Println(p)

lang := (*string)(unsafe.Pointer(uintptr(unsafe.Pointer(&p))   + unsafe.Sizeof(int(0)) + unsafe.Sizeof(string(""))))
            *lang = "Golang"

fmt.Println(p)
    }

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{stefno 18 go}
    {stefno 18 Golang}