[swift-evolution] Please remove obscure "!" requirements for implicitly unwrapped optionals

[Amir Michail]

> On Dec 3, 2015, at 6:49 PM, Chris Lattner <clattner at apple.com> wrote:
> 
> 
>> On Dec 3, 2015, at 3:10 PM, Amir Michail <a.michail at me.com> wrote:
>> 
>> In particular, this should not be required in boolean contexts.
>> 
>> Is there any good reason why certain contexts require the “!” suffix?
> 
> ! is used to in multiple different ways for IUO’s.  What specifically are you objecting to?  Please give an example, thanks!
> 
> -Chris
> 

I really don’t like having to put the ! suffix in boolean contexts:

"if displayFlag! { ... }" instead of "if displayFlag { … }" etc.

If you also want a way to compare with nil, then maybe have this for implicitly unwrapped optionals:

if displayFlag? == nil { … }