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C# 7.1 and .NET Core 2.0 - Modern Cross-Platform Development - Third Edition
book

C# 7.1 and .NET Core 2.0 - Modern Cross-Platform Development - Third Edition

by Mark J. Price, Dustin Heffron, Efraim Kyriakidis
November 2017
Intermediate to advanced
800 pages
30h 51m
English
Packt Publishing
Content preview from C# 7.1 and .NET Core 2.0 - Modern Cross-Platform Development - Third Edition

Targeting a named method

Let's define a method that only includes names that are longer than four characters.

Statically import the Console class, and then add the following method to the Program class:

static bool NameLongerThanFour(string name) 
{ 
   return name.Length > 4; 
}

Pass the method's name into the Func<string, bool> delegate, and then loop through the query items, as shown in the following code:

var query = names.Where(new Func<string, bool>(NameLongerThanFour)); foreach (string item in query) 
{ 
   WriteLine(item); 
}

In the Main method, call the LinqWithArrayOfStrings method, as shown in the following code:

static void Main(string[] args){   LinqWithArrayOfStrings();}

Run the console application and view the output:

Michael
Dwight
Angela ...
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Publisher Resources

ISBN: 9781788398077