On Wednesday, November 21, 2018 at 2:38:42 PM UTC-8, Sun Frank wrote:
>
> Perfect! Thank you so much for your answer and explanation, : )
>
It is, unfortunately, a very common "gotcha". More discussion can be found
here: https://github.com/golang/go/issues/20733
Cheers,
-Sam.
> Best
Perfect! Thank you so much for your answer and explanation, : )
Best Regards
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andrey mirtchovski 于2018年11月22日周四 上午9:22写道:
> this is a case of a
this is a case of a variable being reused during a range loop.
essentially k[:] is optimized to something resembling (a pointer to
the memory location of the backing array) which is appended as such to
the [][]int variable. the next iteration it is the same variable in
memory, however it's
Hi, just add k := k after the for-range line
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Hi guys, I came across some code that surprised me, but I could not figured
out why it behave like this,
s := make([][]int, 0)
a1 := [3]int{1, 2, 3}
a2 := [3]int{4, 5, 6}
s = append(s, a1[:])
s = append(s, a2[:])
fmt.Println(s)
mp := make(map[[3]int]bool)
mp[[3]int{1, 2, 3}] = true
mp[[3]int{4,