The question was about detecting cyclic references. For that, the `l[0] =
l` case is enough.
On Wed, Nov 11, 2020 at 2:31 AM jake...@gmail.com <jake6...@gmail.com>
wrote:
> FYI, that does detect the simple case of l[0] = l, but not more
> complicated circular cases like l[1] = l[1:]
>
> On Tuesday, November 10, 2020 at 2:38:26 AM UTC-5
> axel.wa...@googlemail.com wrote:
>
>> If the slice is empty, it doesn't reference anything.
>> If it is not empty, &x[0] can be used to identify the slice (potentially
>> also using len/cap, if it's interesting).
>>
>> On Tue, Nov 10, 2020 at 4:11 AM arpad ryszka <arpad....@gmail.com> wrote:
>>
>>> Hi,
>>>
>>> is there a way to detect the cyclic reference in the following example
>>> somehow? Either via reflection or by other means? My understanding is that
>>> slices cannot be compared with == (unless to nil), or used as keys in maps.
>>> Is there a different way?
>>>
>>> l := []interface{}{"foo"}
>>> l[0] = l
>>> fmt.Println(l)
>>>
>>> or here it is as a playground link:
>>> https://play.golang.org/p/T0qZlF8m-vi
>>>
>>> Cheers,
>>> Arpad
>>>
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