如何从 C# 中的 double[] 中提取值？

Question

我有以下数组：

 private static readonly double[,] positionsOfCustomer = new double[,] {                    
        {47.645892, -122.336954},   // Gasworks Park
        {47.688741, -122.402965},   // Golden Gardens Park
        {47.551093, -122.249266},   // Seward Park
        {47.555698, -122.065996},   // Lake Sammamish Park
        {47.663747, -122.120879},   // Marymoor Park
        {47.857295, -122.316355},   // Meadowdale Beach Park
        {47.530250, -122.393055},   // Lincoln Park
        {47.503266, -122.200194},   // Gene Coulon Park
        {47.591094, -122.226833},   // Luther Bank Park
        {47.544120, -122.221673}    // Pioneer Park
    };

我更喜欢命名值而不是使用注释，所以我尝试使用 Visual Studio 来提取值，例如：

 private static readonly object gasworksPark = { 47.645892, -122.336954 };
 // etc.

 private static readonly double[,] positionsOfCustomer = new double[,] {
        gasworksPark,   
        // etc.
    };

但这至少会导致两个错误：

1. Can only use array initializer expressions to assign array types. Try a new expression instead.
2. A nested array initializer is expected.

如何以编译器能够理解的方式提取这些值？

Answer 1

我不确定如何使用 Multidimensional Array 实现此目的，但可以使用 Jagged Array:

private static readonly double[] gasworksPark = { 47.645892, -122.336954 };
private static readonly double[] goldenGardensPark = { 47.688741, -122.402965 };
// etc.

private static readonly double[][] positionsOfCustomer = new double [][]{
    gasworksPark,
    goldenGardensPark
};

Answer 2

你可以试试这个

private static readonly double[,] gasworksPark =  {{ 47.645892, -122.336954 }};
private static readonly double[,] goldenGardensPark = {{ 47.688741, -122.402965 }};
//etc...
private static readonly object[] positionsOfCustomer =
{
    gasworksPark, 
    goldenGardensPark,
    //etc
};

Answer 3

你也可以使用这个

private Dictionary<Name, Tuple<double, double>> names = new Dictionary<Name, Tuple<double, double>>
            {
                { Name.gasworksPark, new Tuple<double, double>( 47.645892, -122.336954 ) },
                { Name.goldenGardensPark, new Tuple<double, double>( 47.688741, -122.402965 ) }
            };

private enum Name
{
gasworksPark,
goldenGardensPark
}