Skip to Content
C# and .NET Core Test-Driven Development
book

C# and .NET Core Test-Driven Development

by Ayobami Adewole
May 2018
Intermediate to advanced content levelIntermediate to advanced
300 pages
7h 35m
English
Packt Publishing
Content preview from C# and .NET Core Test-Driven Development

Out keyword

In C#, arguments or parameters can be passed by reference or value. When you pass an argument by reference to a method, property, or constructor, the value of the parameter will be changed and the changes made will be retained when the method or constructor goes out of scope. With the use of the out keyword, you can pass a method's argument as a reference in C#. Prior to C# 7, to use the out keyword, you had to declare a variable before passing it as an out argument to a method:

class Program{    static void Main(string[] args)    {        string firstName, lastName;        GetNames(out firstName, out lastName);    }    private static void GetNames(out string firstName, out string lastName)    {        firstName="John";        lastName="Doe";    }}

In C# 7, you can now pass ...

Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Start your free trial

You might also like

Hands-On Design Patterns with C# and .NET Core

Hands-On Design Patterns with C# and .NET Core

Gaurav Aroraa, Jeffrey Chilberto
.NET Core in Action

.NET Core in Action

Dustin Metzgar

Publisher Resources

ISBN: 9781788292481Supplemental Content