[swift-evolution] The great renaming and the state of new Unified Logging in Swift

Douglas Gregor dgregor at apple.com
Mon Sep 5 14:01:44 CDT 2016



Sent from my iPhone

> On Sep 5, 2016, at 11:20 AM, Goffredo Marocchi <panajev at gmail.com> wrote:
> 
> 
> Sent from my iPhone
> 
>> On 5 Sep 2016, at 18:59, Douglas Gregor <dgregor at apple.com> wrote:
>> 
>> 
>> 
>> Sent from my iPhone
>> 
>>> On Sep 4, 2016, at 11:48 PM, Goffredo Marocchi <panajev at gmail.com> wrote:
>>> 
>>> Hey Doug,
>>> 
>>> How do I use it in Swift code without a wrapper, which is understandably a bit pointless, if I still support iOS 9?
>> 
>> #if or a wrapper are your best options. 
>> 
> 
> This is confusing to me as the WWDC talk they specifically said not to use wrappers as it would pick up the wrong context

Ah, right. I forgot about that. 

> and using the #if directive at every call site would make for a lot of repeated code... hard to use.

Yes, using #if can be boilerplate-y here. 

> It would be good if macro support for Swift landed in the not too distant future as cases like this make its lack of sorely missed.

Macro support is not likely to be a priority for  quite a while. 

  - Doug

> 
>>   - Doug
>> 
>>> 
>>> Sent from my iPhone
>>> 
>>>> On 5 Sep 2016, at 05:05, Brandon Knope via swift-evolution <swift-evolution at swift.org> wrote:
>>>> 
>>>> Where should the lack of {public} be reported then?
>>>> 
>>>> This seems like it falls under jira and not radar because it's in swift open source but I'm not 100 percent 
>>>> 
>>>> Brandon 
>>>> 
>>>> Sent from my iPad
>>>> 
>>>>> On Sep 4, 2016, at 11:48 PM, Douglas Gregor <dgregor at apple.com> wrote:
>>>>> 
>>>>> 
>>>>> 
>>>>> Sent from my iPhone
>>>>> 
>>>>>> On Sep 3, 2016, at 11:32 AM, Ben Rimmington via swift-evolution <swift-evolution at swift.org> wrote:
>>>>>> 
>>>>>> 
>>>>>>> On 3 Sep 2016, at 19:13, Brandon Knope <bknope at me.com> wrote:
>>>>>>> 
>>>>>>> Thank you! I was looking for this last night and failed. 
>>>>>>> 
>>>>>>> Why do you think {public} isn't included?
>>>>>> 
>>>>>> I don't know, but trying to reimplement __builtin_os_log_format in the overlay seems wrong. It would be better to have a variant of __builtin_os_log_format which takes a va_list.
>>>>> 
>>>>> 
>>>>> __builtin_os_log_format is implemented by Clang, not a library, and is quite involved. Implementing os_log in an overlay to provide near feature-compatibility with the C API is the right approach for Swift 3, where a more comprehensive solution (say, a general logging API based on string interpolation or similar) is way out of scope. 
>>>>> 
>>>>>   - Doug
>>>>> 
>>>>> 
>>>>>> 
>>>>>> -- Ben
>>>>>> 
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