C# 8.0 Pocket Reference by Ben Albahari & Joseph Albahari

Author:Ben Albahari & Joseph Albahari [Ben Albahari]
Language: eng
Format: epub
Publisher: O'Reilly Media, Inc.
Published: 2019-11-18T16:00:00+00:00

Lambda Expressions

A lambda expression is an unnamed method written in place of a delegate instance. The compiler immediately converts the lambda expression to either of the following:

A delegate instance.

An expression tree, of type Expression<TDelegate>, representing the code inside the lambda expression in a traversable object model. This allows the lambda expression to be interpreted later at runtime (we describe the process in Chapter 8 of C# 8.0 in a Nutshell).

Given the following delegate type

delegate int Transformer (int i);

we could assign and invoke the lambda expression x => x * x as follows:

Transformer sqr = x => x * x; Console.WriteLine (sqr(3)); // 9

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