Feature/improve cartesian coordinate serialization

docs/CodeDoc/Atc/Atc.Factories.md

@@ -16,11 +16,21 @@ Provides factory methods for creating instances of `System.Collections.Generic.I
 
 ### Static Methods
 
-#### EmptyAsyncEnumerable
+#### Empty
 >```csharp
->IAsyncEnumerable<T> EmptyAsyncEnumerable()
+>IAsyncEnumerable<T> Empty()
 >```
 ><b>Summary:</b> Returns an empty `System.Collections.Generic.IAsyncEnumerable`1`.
 >
 ><b>Returns:</b> An empty `System.Collections.Generic.IAsyncEnumerable`1`.
+#### FromSingleItem
+>```csharp
+>IAsyncEnumerable<T> FromSingleItem(T item)
+>```
+><b>Summary:</b> Converts a single item into an `System.Collections.Generic.IAsyncEnumerable`1`.
+>
+><b>Parameters:</b><br>
+>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;`item`&nbsp;&nbsp;-&nbsp;&nbsp;The item to convert.<br />
+>
+><b>Returns:</b> An `System.Collections.Generic.IAsyncEnumerable`1` containing the single item.
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docs/CodeDoc/Atc/IndexExtended.md

@@ -4395,7 +4395,8 @@
 
 - [AsyncEnumerableFactory](Atc.Factories.md#asyncenumerablefactory)
   -  Static Methods
-     - EmptyAsyncEnumerable()
+     - Empty()
+     - FromSingleItem(T item)
 
 ## [Atc.Helpers](Atc.Helpers.md)
 

src/Atc/Structs/CartesianCoordinate.cs

@@ -13,6 +13,7 @@ public record struct CartesianCoordinate(double Latitude = 0, double Longitude =
     /// <value>
     ///   <c>true</c> if this instance is default; otherwise, <c>false</c>.
     /// </value>
+    [JsonIgnore]
     public readonly bool IsDefault => Latitude.IsEqual(0) && Longitude.IsEqual(0);
 
     /// <summary>
@@ -23,8 +24,9 @@ public readonly bool Equals(CartesianCoordinate other) =>
         Latitude.AreClose(other.Latitude) &&
         Longitude.AreClose(other.Longitude);
 
+    /// <inheritdoc />
     public override readonly int GetHashCode()
-        => base.GetHashCode();
+        => HashCode.Combine(Latitude, Longitude);
 
     /// <inheritdoc />
     public override readonly string ToString()