We have to specify function names while creating them. However, there is a special class of functions for which we do not need to specify function names.

Definition

A lambda is an anonymous function that returns some form of data.

Lambdas are defined using the lambda keyword. Since they return data, it is a good practice to assign them to a variable.

Syntax#

The following syntax is used for creating lambdas:

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In the structure above, the parameters are optional.

Let’s try creating a few simple lambdas.

Below, we can find a lambda that triples the value of the parameter and returns this new value: