reflect convert unimplemented

[ajinwu]

hello, I have a problem. In jupyter go, I use pointers to convert types, but the prompt does not implement pointer conversion, but I have no problem in vscode. Please refer to the official compiled implementation

my platform: ubuntu 19.10
go version: cat VERSION go1.14
install method: in my pc, use my jupyter

this is code

System.out.println("Hello to see U!");
var a = []float64{4, 2, 5, 7, 2, 1, 88, 1}
func SortFloat64FastV1(a []float64) {

// 强制类型转换

var b []int = ((*[1 << 20]int)(unsafe.Pointer(&a[0])))[:len(a):cap(a)]
// 以int方式给float64排序
sort.Ints(b)

}
func SortFloat64FastV2(a []float64) {

// 通过 reflect.SliceHeader 更新切片头部信息实现转换

var c []int

aHdr := (*reflect.SliceHeader)(unsafe.Pointer(&a))

cHdr := (*reflect.SliceHeader)(unsafe.Pointer(&c))

*cHdr = *aHdr
// 以int方式给float64排序
sort.Ints(c)

}

errors: repl.go:5:54: unimplemented conversion from <*float64> to <unsafe.Pointer> with reflect.Type <*float64> to <unsafe.Pointer>

thanks very much

[cosmos72]

Yes, it's a limitation of the interpreter.

Unluckily it's basically impossible to implement unsafe.Pointer in an interpreter which is written itself in Go - any reasonable implementation would need many more (unsafe) features than the ones provided by the Go language

[ajinwu]

Yes, it's a limitation of the interpreter.

Unluckily it's basically impossible to implement unsafe.Pointer in an interpreter which is written itself in Go - any reasonable implementation would need many more (unsafe) features than the ones provided by the Go language

thanks very much