Puzzle 18: Creating Dynamic C# TypesBill Wagner
DirectionManeuverType::SharpRight 8 A sharp right turn. DirectionManeuverType::UTurn 9 A U-turn. DirectionManeuverType::Ferry 10 A maneuver connecting with a ferry. DirectionManeuverType::Roundabout 11 A maneuver via roundabout. DirectionManeuverType::HighwayMerge 12 A merge of several highways. ...
In the context of method overloading, the signature of a method doesn't include the return value. However, in the context of delegates, the signature does include the return value. In other words, a method must have a compatible return type as the return type declared by the delegate. Th...
shape, and relative position, on opposite sides of a dividing line or distributed around a central point or axis. With the exception of radial symmetry, external form has little relation to internal anatomy, since animals of very different anatomical construction may have the same type of symmetry...
You can create an array of anonymously typed elements by combining an implicitly typed local variable and an implicitly typed array, as shown in the following example. C# varanonArray =new[] {new{ name ="apple", diam =4},new{ name ="grape", diam =1}}; ...
When you dereference a variable whose value isnull, the runtime throws aSystem.NullReferenceException. Similarly warnings can be produced when[]notation is used to access a member of an object when the object isnull: C# usingSystem;publicclassCollection<T> {privateT[] array =newT[100];publi...
You can't specify a specific type outside the parentheses even if every field in the tuple has the same type. Doing so generates compiler error CS8136, "Deconstruction 'var (...)' form disallows a specific type for 'var'." You must assign each element of the tuple to a variable. If...
public static class Guard { public static void NotNull<T>(T value, string name) { if (ReferenceEquals(value, null)) { throw new ArgumentNullException(name); } } } Expected Behavior: No error, allowing callers to pass in a nullable value type or a nullable reference type. Adding a cons...
Inspired by Stalin∇, Autograd, DiffSharp, Myia, Nexus, Tangent, Lantern et al., Kotlin∇ attempts to port recent advancements in automatic differentiation (AD) to the Kotlin language. AD is useful for gradient descent and has a variety of applications in numerical optimization and machine le...
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