話不多說(shuō)，看代碼知道輸出結(jié)果么？

import (
    "github.com/spotmaxtech/gokit"
    "testing"
)

func TestRangeFault(t *testing.T) {
    l1 := []int{1,2,3,4,5}
    var l2 []*int
    for _, i := range l1 {
        l2 = append(l2, &i)
    }

    t.Log(gokit.Prettify(l2))
}

輸出結(jié)果

=== RUN   TestRangeFault
--- PASS: TestRangeFault (0.00s)
    lesson18-_test.go:67: [
          5,
          5,
          5,
          5,
          5
        ]
PASS

Process finished with exit code 0

for range每次循環(huán)使用的是同一個(gè)臨時(shí)變量！每次都是做了一次值拷貝而已，引用它的指針是有問(wèn)題的！