Go 方法参数和 float64 数组给出意外错误

Question

编译以下代码时...

package camera

type camera struct {

    position [3]float64

    viewWidth int

    viewHeight int

}

func (c camera) SwitchToCartesianThreeSpace(x, y int) [3]float64 { // LINE 9

    var x3 float64 = 0 // view is set to the origin

    var y3 float64 = float64(x) - (float64(c.viewWidth) / 2)

    var z3 float64 = float64(-y) + (float64(c.viewHeight) / 2)

    result := [3]float64{x3, y3, z3}                               // LINE 13

    return result

}

...出现以下错误。

camera/camera.go:9: undefined: x

camera/camera.go:9: undefined: y

camera/camera.go:11: undefined: x

camera/camera.go:12: undefined: y

camera/camera.go:13: cannot use x3 (type float64) as type [3]float64 in array element

camera/camera.go:13: cannot use y3 (type float64) as type [3]float64 in array element

camera/camera.go:13: cannot use z3 (type float64) as type [3]float64 in array element

到目前为止，我已经编写了相当多的 Go 代码，但不明白为什么会出现第 9 行的错误或第 13 行的错误！有谁能解释一下吗？

Answer 1

在 playgroud 中隔离，它编译得很好，并具有预期的输出：c := camera{}res := c.SwitchToCartesianThreeSpace(2, 3)// res is [0 2 -3]您需要尝试只camera.go包含该代码，或检查文件如何适合您当前的工作区。camera.go