[swift-evolution] [DRAFT] Regularizing Where Grammar (was Re: Add a while clause to for loops)

[Christopher Kornher]

-1 

An alternative would be to:

	1) State clearly in all relevant documentation that ‘where’ filters and  ‘while’ terminates.
	2) Eliminate the use of ‘where’ within ‘while’ clauses.

This seems pretty straightforward to me. The principle in  #1 should be easy for even beginners to grasp.

Using ‘guard’ statements instead of ‘where’ clauses adds a lot of visual noise for me. 



> On Jun 10, 2016, at 1:08 PM, Erica Sadun via swift-evolution <swift-evolution at swift.org> wrote:
> 
> 
>> On Jun 10, 2016, at 1:06 PM, Rob Norback via swift-evolution <swift-evolution at swift.org> wrote:
>> 
>> Following Brent's logic that the for-in where should mimic the switch statement functionality, then this example:
>> 
>> for (eachKey, eachValue) 
>> where eachValue > 5 
>> in theKeyValuePairs {... }
>> 
> 
> <squish>
> 
> I finally convinced myself of which direction I wanted to go: https://github.com/apple/swift-evolution/pull/362/files
> 
> Related blog post here: http://ericasadun.com/2016/06/10/swift-where-oh-where-can-my-where-clause-be/
> 
> Big thanks to Brent and Wux.
> 
> -- E
> 
> 
> 
> 
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