[swift-evolution] Make non-void functions @warn_unused_result by default

[James Hillhouse]

+1 for the proposal

> On Feb 25, 2016, at 9:46 AM, Dave Abrahams via swift-evolution <swift-evolution at swift.org> wrote:
> 
> 
> on Wed Feb 24 2016, Janosch Hildebrand <jnosh-AT-jnosh.com <http://jnosh-at-jnosh.com/>> wrote:
> 
>> Thanks for the encouragement everyone! I’ll start drafting over the weekend.
>> 
>> With regard to the inverted attribute, that is definitely open to discussion.
>> Other variants that had been mentioned previously include:
>> 
>> @suppress_unused_result - suggested by Adrian Kashivskyy
>> @allow_unused_result - suggested by Kevin Ballard
>> @ignoreresult - suggested by Brent Royal-Gordon
> 
> @no_warn_unused_result would seem to be the least confusable spelling.
> @incidental_result would be semantically valid and shorter, but I can't
> say I like it.
> 
>> Also the aforementioned “Modernizing Attribute Case and Attribute
>> Argument Naming” proposal[1] will also play into this discussion as
>> well.
>> 
>> [1] https://lists.swift.org/pipermail/swift-evolution/Week-of-Mon-20160215/010510.html
>> 
>> - Janosch
>> 
>>> On 24 Feb 2016, at 21:37, Haravikk via swift-evolution <swift-evolution at swift.org> wrote:
>>> 
>>>> 
>>>> On 24 Feb 2016, at 19:27, Dave Abrahams via swift-evolution <swift-evolution at swift.org> wrote:
>>>> 
>>>> 
>>>> on Wed Feb 24 2016, Chris Lattner <swift-evolution at swift.org> wrote:
>>>> 
>>>>>> On Feb 24, 2016, at 7:13 AM, Janosch Hildebrand via swift-evolution <swift-evolution at swift.org> wrote:
>>>>>> 
>>>>>> Erica's proposal about "Modernizing Attribute Case and Attribute
>>>>>> Argument Naming" made me remember this discussion.
>>>>>> 
>>>>>> I don't think a proposal was ever submitted? If no one else is
>>>>>> working on a proposal already I would offer myself up for writing
>>>>>> this up.
>>>>> 
>>>>> I don’t recall a real proposal, it would be great for you to drive this.
>>>> 
>>>> Yes, please!  I *really* want this change.
>>> 
>>> Same!
>>> 
>>> The only thing that needs to be considered is what to name the
>>> replacement attribute (for methods where the return value isn’t
>>> important). I’m thinking @optionalReturn or @ignoreUnusedResult or
>>> such.
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> 
> -- 
> -Dave
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