is string a nullable type

Because string is a reference type, deriving from object and [most] other d...

Because string is a reference type, deriving from object and [most] other default types are value types, deriving implicitly from System.

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dwn.220.v.ua is a reference type and already "nullable". Nullable...

dwn.220.v.ua is a reference type and already "nullable". Nullable and the? suffix are for value types such as Int32, Double, DateTime, etc.

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You see nullable types can only be declared for Value types (eg int, float,...

You see nullable types can only be declared for Value types (eg int, float, bool etc.) and not for Reference Types (like string) as I discovered.

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Nullable types are instances of the Nullable struct. A nullable type can re...

Nullable types are instances of the Nullable struct. A nullable type can represent the correct range of values for its underlying value type, plus an additional.

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You cannot construct a nullable type on a reference type such as an array, ...

You cannot construct a nullable type on a reference type such as an array, a String, or a class. The underlying type must be a value type. For more information.

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This article explains the details and use of Nullable Type in C#. GetHashCo...

This article explains the details and use of Nullable Type in C#. GetHashCode(); } public override string ToString() { if (!HasValue) return "".

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At the risk of starting a religious war, I will express my opinion that the...

At the risk of starting a religious war, I will express my opinion that there are no advantages to having nullable types. These should always be.

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You can use a nullable type any place that you need a variable that can Str...

You can use a nullable type any place that you need a variable that can String. That makes sense! String is a reference type, not a value type.

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Type declarations for parameters and return values can now be marked as nul...

Type declarations for parameters and return values can now be marked as nullable by prefixing the type name with a question mark. . Negative string and array offsets are now also supported in the simple variable parsing syntax inside of.

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/stuff/src/flow-experiments/dwn.220.v.ua, undefined This type is incompatib...

/stuff/src/flow-experiments/dwn.220.v.ua, undefined This type is incompatible with /stuff/src/flow-experiments/dwn.220.v.ua, string.

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* $this->x: * $this->x; } } function bar(): string { // local variabl...

* $this->x: * $this->x; } } function bar(): string { // local variables are .. A nullable type is represented by a? placed as a prefix to the type itself (e.g.,?int).

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We can check whether an object conforms to a given type at runtime by using...

We can check whether an object conforms to a given type at runtime by using Note that null cannot be cast to String as this type is not nullable, i.e. if y is null.

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The C# language provides support for two types of data: value types and ref...

The C# language provides support for two types of data: value types and reference types. While a variable of type dwn.220.v.ua is a reference.

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This C# article describes null strings and empty strings. It shows how to a...

This C# article describes null strings and empty strings. It shows how to avoid NullReferenceExceptions.

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C# introduced nullable types that allow you to assign null to value type va...

C# introduced nullable types that allow you to assign null to value type variables. You can declare static void Main(string[] args) { Nullable i = null; if (i.

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