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

[LM]

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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