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@zntfdr
Created February 13, 2016 04:16
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struct Path: Comparable {
let cumulativeWeight: Int
let lastNode: Node
let previousPath: Path?
init(toNode: Node, viaConnection: Connection?=nil, viaPath: Path?=nil) {
if let
previousPath = viaPath,
lastConnection = viaConnection {
self.cumulativeWeight = lastConnection.weight + previousPath.cumulativeWeight
} else {
self.cumulativeWeight = 0
}
self.lastNode = toNode
self.previousPath = viaPath
}
}
func ==(x: Path, y: Path) -> Bool {
return x.cumulativeWeight == y.cumulativeWeight
}
func <(x: Path, y: Path) -> Bool {
return x.cumulativeWeight < y.cumulativeWeight
}
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