[swift-users] Extending Arrays of specific type, and specialization

[Rick Mann via swift-users]

My googling is not turning up an answer that works in Xcode 8.1. I'd like to do 
this:


import Accelerate

extension
Array
        where Element == Double
{
        func
        sum()
                -> Double
        {
                var result: Double = 0.0
                vDSP_sveD(self, 1, &result, vDSP_Length(self.count))
                return result
        }
}

But I get "same-type requirement makes generic parameter 'Element' non-generic."

Also, will there ever be any way to specialize something like

        let numbers: [Double] = ...
        let sum = numbers.reduce(0.0, +)

Into a call to vDSP_sveD()? Would it require compiler optimizations for 
Accelerate?

Thanks!

-- 
Rick Mann
rm...@latencyzero.com


_______________________________________________
swift-users mailing list
swift-users@swift.org
https://lists.swift.org/mailman/listinfo/swift-users