[swift-evolution] [swift-evolution-announce] [Review] SE-0187: Introduce Sequence.filterMap(_:)

[Johannes Weiß]

+1 and agree with Stephen on why

> On 8 Nov 2017, at 8:17 am, Stephen Celis via swift-evolution <swift-evolution at swift.org> wrote:
> 
> +1
> 
>> On Nov 7, 2017, at 6:23 PM, John McCall <rjmccall at apple.com> wrote:
>> 
>> 	• What is your evaluation of the proposal?
> 
> BJ summarized my thoughts nicely. I think “flatMap” in its current form is confusing to both newcomers and functional programmers familiar with the nomenclature. I’ve been aware of this disparity and thought about it for awhile. I typically redefine “flatMap” as “mapOptional” in my projects for clarity.
> 
>> 	• Is the problem being addressed significant enough to warrant a change to Swift?
> 
> I think so! It improves the user experience in a significant way to those that encounter the function in the wild.
> 
>> 	• Does this proposal fit well with the feel and direction of Swift?
> 
> Yes.
> 
>> 	• If you have used other languages or libraries with a similar feature, how do you feel that this proposal compares to those?
> 
> It fits in well. Swift’s current extra implementation of “flatMap” is the anomaly.
> 
>> 	• How much effort did you put into your review? A glance, a quick reading, or an in-depth study?
> 
> Gave a quick reading to the proposal.
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