[swift-evolution] [Idea] if let value!

[Vladimir.S]

Very interesting. But, as I can see, no community's support for this feature.

On 18.05.2016 12:22, LM wrote:
> I am experimenting with this:
>
> If var! anOptional {
>    anOptional   // unwrapped, shadowing
> }
>
> if let! anOptional {
> ... // same
> }
>
>
> This compiler codebase is truly remarkable, so it should also works with
>
> If var! opt1 where opt1 < 27 {
> }
>
> or
>
> if var! opt1, opt2 {
>    // both unwrapped
> }
>
> LM/
>
>
>> On May 18, 2016, at 10:21 AM, Daniel Höpfl via swift-evolution <swift-evolution at swift.org> wrote:
>>
>> Just an idea: Why don’t we think about it similar to try?
>>
>> var anOptional : String?
>>
>> let? anOptional { /* use it, but cannot change it */ }
>> let! anOptional { /* use it, without checking, cannot change it */ }
>>
>> var? anOptional { /* use it, can also change it, */ }
>> var! anOptional { /* use it, without checking, can also change it */ }
>>
>> Is it allowed to set it to nil in the var case? Hard to say.
>>
>>> On 17.05.16 15:43, Vladimir.S via swift-evolution wrote:
>>> It is common to shadow optional value name with unwrapped value with
>>> same name:
>>>
>>> if let someGoodValue = someGoodValue {...}
>>>
>>> What if we'll have a syntax to not repeat the variable name to achieve
>>> the same target:
>>>
>>> if let someGoodValue! {...}
>>>
>>> What do you think?
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>