[Feature] Automatic tuple name bindings

[bradphelan]

I just realized that this

        foreach (var o in from toolPathItem in controlPointSolvedInterpolator.GroupedKeyPoints.Concat()
                          from edgePosition in toolPathItem.ToolAxesSolved.RailPositionOption.AsEnumerable()
                          from edgeCurve in toolPathItem.ControlPoint.Run.EdgeCurveOption.AsEnumerable()
                          select (toolPathItem, edgePosition, edgeCurve))
            color = RenderPointOnEdge( renderMesh, o.toolPathItem, color, o.edgeCurve, o.edgePosition, d );

doesn't work but

        foreach (var o in from toolPathItem in controlPointSolvedInterpolator.GroupedKeyPoints.Concat()
                          from edgePosition in toolPathItem.ToolAxesSolved.RailPositionOption.AsEnumerable()
                          from edgeCurve in toolPathItem.ControlPoint.Run.EdgeCurveOption.AsEnumerable()
                          select new {toolPathItem, edgePosition, edgeCurve})
            color = RenderPointOnEdge( renderMesh, o.toolPathItem, color, o.edgeCurve, o.edgePosition, d );

does. I would have to do

        foreach (var o in from toolPathItem in controlPointSolvedInterpolator.GroupedKeyPoints.Concat()
                          from edgePosition in toolPathItem.ToolAxesSolved.RailPositionOption.AsEnumerable()
                          from edgeCurve in toolPathItem.ControlPoint.Run.EdgeCurveOption.AsEnumerable()
                          select (toolPathItem : toolPathItem, edgePosition:edgePosition, edgeCurve:edgeCurve))
            color = RenderPointOnEdge( renderMesh, o.toolPathItem, color, o.edgeCurve, o.edgePosition, d );

to get the tuple version working. This is a bit unfortunate as the ValueTuple version is more efficient but the code is much uglier. Can we please have automatic tuple name generation just like with anonymous types?

[bradphelan]

Oh... on the way in 7.1
https://github.com/dotnet/csharplang/blob/master/proposals/csharp-7.1/infer-tuple-names.md

[jnm2]

Yes. Conversation here: #370