要按照位置与CLLocationCoordinate2D的接近程度对结构体的字典进行排序，可以使用Swift的sorted方法和CLLocationCoordinate2D的distance方法来实现。

首先，定义一个结构体包含位置信息和其他指定的属性：

struct Location {
    var coordinate: CLLocationCoordinate2D
    var name: String
    // 其他属性...
}

然后，创建一个包含Location结构体的字典：

var locations: [Int: Location] = [
    1: Location(coordinate: CLLocationCoordinate2D(latitude: 37.7749, longitude: -122.4194), name: "San Francisco"),
    2: Location(coordinate: CLLocationCoordinate2D(latitude: 34.0522, longitude: -118.2437), name: "Los Angeles"),
    3: Location(coordinate: CLLocationCoordinate2D(latitude: 29.7604, longitude: -95.3698), name: "Houston")
]

接下来，定义一个函数来计算两个CLLocationCoordinate2D之间的距离：

func distance(from: CLLocationCoordinate2D, to: CLLocationCoordinate2D) -> CLLocationDistance {
    let fromLocation = CLLocation(latitude: from.latitude, longitude: from.longitude)
    let toLocation = CLLocation(latitude: to.latitude, longitude: to.longitude)
    return fromLocation.distance(from: toLocation)
}

最后，使用sorted方法对字典进行排序，根据当前位置与每个Location的coordinate距离的接近程度进行比较：

let currentLocation = CLLocationCoordinate2D(latitude: 37.7749, longitude: -122.4194)
let sortedLocations = locations.sorted { (location1, location2) -> Bool in
    let distance1 = distance(from: currentLocation, to: location1.value.coordinate)
    let distance2 = distance(from: currentLocation, to: location2.value.coordinate)
    return distance1 < distance2
}

for (index, location) in sortedLocations {
    print("\(index): \(location.name)")
}

以上代码将按照当前位置与每个位置的接近程度对字典进行排序，并将结果打印出来。请根据实际需要修改代码中的位置坐标和其他属性。