On Fri, Aug 25, 2023 at 1:55 PM محمد بومنذر
<mohammed.bu...@gmail.com> wrote:
>
> It's actually plain text but copied right from my editor with the theme
> styles, I'll use the playground for future examples.
Thanks. Then I guess my request is to paste as plain text without styles.
Ian
> Thank you for clarifying. I do see how the compiled version will need to be
> repetitive, although as you mentioned this piece of code is not a common case.
> في Friday, August 25, 2023 في تمام الساعة 11:43:05 PM UTC+3، كتب Ian Lance
> Taylor رسالة نصها:
>>
>> On Fri, Aug 25, 2023 at 7:43 AM محمد بومنذر
>> <mohamme...@gmail.com> wrote:
>> >
>> > I'm writing a parser based on Go's `encoding/xml`, I tried to use the
>> > following pattern but it was deemed invalid:
>> >
>> > ```
>> > To me, it'd make sense if it was allowed since both types are structs and
>> > both of them share the field `Name` with the subsequent field `Local`.
>>
>>
>> Please post code as plain text or as a link to the Go playground, not
>> as an image. Images are much harder to read, and there is no reason
>> to use them for plain code. Thanks.
>>
>> We are unlikely to implement such a language feature. We would have
>> to have careful definitions of what kinds of code are permitted in a
>> case with multiple types. And since in general there is no reason to
>> expect that the fields are at the same location, we would have to
>> compile the case differently for each type anyhow. And the code might
>> actually behave quite differently; should we permit code like
>>
>> switch x := v.(type) {
>> case []int, map[int]int:
>> return x[1]
>> }
>>
>> Ian
>
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