I'm aware of why the JSON unmarshal overwrites contents of the pointer, as
I followed the code. I'm also aware of how to pass the slice argument
"correctly".
There's a problem with section (2) because that's not exactly what happens
> during append. There was a proposition to re-initialize
>From unmarshal doc:
1. To unmarshal JSON into a pointer, Unmarshal first handles the case
of the JSON being the JSON literal null. In that case, Unmarshal sets the
pointer to nil. Otherwise, Unmarshal unmarshals the JSON *into the value
pointed at by the pointer*. *If the pointer is nil,
"To unmarshal a JSON array into a slice, Unmarshal resets the slice length
to zero and then appends each element to the slice."
And you gave "" to Unmarshal twice. So it zeroed the length, and
appended the second time,
effectively overwriting the first (and only) element.
This is intended
