[swift-users] Misleading? cannot subscript a value of type 'inout [PathPoint]' with optional field

[Jordan Rose]

Hi, Rick. The error seems to be a little better in master:

<stdin>:20:11: error: cannot convert value of type 'CGPoint?' to expected argument type 'inout CGPoint'
points[0].anchorPt += dv
~~~~~~~~~~^~~~~~~~

but that's still not great. So, yes, please do file a bug at bugs.swift.org <http://bugs.swift.org/>.

Thank you!
Jordan

> On Nov 11, 2016, at 13:29, Rick Mann via swift-users <swift-users at swift.org> wrote:
> 
> I think the error I'm getting here is misleading. Should I file a bug?
> 
> import CoreGraphics
> 
> func
> +=(inLHS : inout CGPoint, inRHS : CGPoint)
> {
>    inLHS.x += inRHS.x
>    inLHS.y += inRHS.y
> }
> 
> struct
> PathPoint
> {
>    var    anchorPt:    CGPoint?
> }
> 
> var points = [PathPoint()]
> 
> let dv = CGPoint(x: 0, y: 0)
> points[0].anchorPt = dv
> points[0].anchorPt += dv
> 
> 
> Playground execution failed: error: MyPlayground.playground:17:7: error: cannot subscript a value of type 'inout [PathPoint]' (aka 'inout Array<PathPoint>')
> points[0].anchorPt += dv
> ~~~~~~^
> 
> 
> 
> -- 
> Rick Mann
> rmann at latencyzero.com
> 
> 
> _______________________________________________
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> swift-users at swift.org
> https://lists.swift.org/mailman/listinfo/swift-users

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