gistfile1.swift

struct ReinterpretSequence<T, U> : Swift.Collection
{
    typealias IndexType = Int
    typealias GeneratorType = IndexingGenerator<ReinterpretSequence<T,U>>
 
    let value: T
    
    
    var startIndex: IndexType { return 0 }
    var endIndex: IndexType { return sizeof(T) / sizeof(U) }
    
    subscript (i: IndexType) -> U {
        var o = value
        return withUnsafePointer(&o) { UnsafePointer($0.value)[i] }
    }
    
    func generate() -> GeneratorType {
        return IndexingGenerator(self)
    }
}


let seq: ReinterpretSequence<UInt32, CChar> = ReinterpretSequence(value: 0x74736574)

for s in seq {
    println(s)
}

Remove _all_ the types!

I think you can just use ...>(var t: T, index: Int) rather than inout; this also reduces the need for var and & elsewhere.