C# Nullables – How to CREATE and when to USE them
🔥 NULLABLES are an ESSENTIAL piece in your code when it comes to getting a CLEAN RESULT, so learning more about them is a MUST!
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TIMESTAMPS
00:00 Intro
00:23 Why are nulllables necessary?
01:06 How do we use nullable?
03:06 This one is for you!
03:38 The short hand syntax for nullable
05:09 Thanks for watching!
C# Nullables – How to CREATE and when to USE them
So, what is C#?
C# (pronounced “See Sharp”) is a modern, object-oriented, and type-safe programming language. C# enables developers to build many types of secure and robust applications that run in .NET. C# has its roots in the C family of languages and will be immediately familiar to C, C++, Java, and JavaScript programmers. This tour provides an overview of the major components of the language in C# 8 and earlier. If you want to explore the language through interactive examples, try the introduction to C# tutorials.
And what are Nullables?
A nullable value type T? represents all values of its underlying value type T and an additional null value. For example, you can assign any of the following three values to a bool? variable: true, false, or null. An underlying value type T cannot be a nullable value type itself.
Any nullable value type is an instance of the generic System.Nullable T structure. You can refer to a nullable value type with an underlying type T in any of the following interchangeable forms: Nullable T or T?.
You typically use a nullable value type when you need to represent the undefined value of an underlying value type. For example, a Boolean, or bool, variable can only be either true or false. However, in some applications a variable value can be undefined or missing. For example, a database field may contain true or false, or it may contain no value at all, that is, NULL. You can use the bool? type in that scenario.
To learn more, make sure to watch the video, and we promise you that you’ll become a better developer by the end of the video! Have fun!
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