Lambda Functions in LISP

Lambda Functions in LISP

Last Updated : 09 Nov, 2021

In this article, we will discuss lambda functions in LISP. The Lambda function is used to evaluate a mathematical expression in our program. They are also known as anonymous functions.

We can create these functions using lambda expression.

Syntax:

(lambda (parameters) expression_code)

where,

The parameters are the numbers of operands in the expression
The expression_code is the mathematical logic expression

Example 1: LISP program to evaluate the mathematical expression through a lambda expression

Lisp

;lambda expression to get sum of product of four numbers
;mathematical expression is (val1*val2) + (val3*val4)

(write ((lambda (val1 val2 val3 val4)
   (+  (* val1 val2) (+ (* val3 val4))))
   ;pass the values
   2 4 6 8)
)
(terpri)
(write ((lambda (val1 val2 val3 val4)
   (+  (* val1 val2) (+ (* val3 val4))))
   ;pass the values
   10 20 30 40)
)

Output:

56
1400

Example 2: LISP Program to evaluate an expression

Lisp

;lambda expression to get product of two numbers
;mathematical expression is (val1*val2) 

(write ((lambda (val1 val2 )
   (* val1 val2))
   ;pass the values
   60 4 )
)
(terpri)
(write ((lambda (val1 val2 )
   (* val1 val2))
   ;pass the values
   10 20 )
)

Output:

240
200

Lambda Functions in LISP

saisravanprojects

Improve

Article Tags :

Similar Reads

Functions in LISP

A function is a set of statements that takes some input, performs some tasks, and produces the result. Through functions, we can split up a huge task into many smaller functions. They also help in avoiding the repetition of code as we can call the same function for different inputs. Defining Functio

Nested Lambda Function in Python

Prerequisites: Python lambda In Python, anonymous function means that a function is without a name. As we already know the def keyword is used to define the normal functions and the lambda keyword is used to create anonymous functions. When we use lambda function inside another lambda function then

Lambda Function - Ruby

In Computer Programming, Lambda functions are anonymous functions. Lambda functions in Ruby are no different.Â Since everything in Ruby is treated as an object, lambdas are also objects in Ruby. Lambdas in Ruby allow us to wrap data and logic in a portable package.Â Â Syntax to create Lambda function

Output Functions in LISP

Output functions need an optional argument known as output stream which by default is "output-stream" and can be assigned to another stream where the output has to be sent. Write:write object Â key : stream Example 1: Lisp ; LISP program for Write (write "Hello World") (write "To") (write "The") (wr

Lambda Function Handler In Python

In the cloud computing revolution, AWS Lambda stands out as a key solution from Amazon Web Services (AWS), allowing developers to easily implement code without the burden of monitoring the check server. In this ecosystem, Lambda Handler becomes important. This handler acts as the gateway to the Lamb

Mapping Functions in LISP

In this article, we will discuss mapping functions in lisp. Mapping functions are applied on the list data structure for combining one or more lists of elements. By using this we can perform mathematical operations and can join the elements. The main advantage of this function is that we can combine

parse() Function in R

The parse() function in R programming language is used to return the parsed but unevaluated expression of a given expression in an expression, a â€œlistâ€ of calls. Also, this function converts an R object of the character class to an R object of the expression class. Syntax: parse(file = "", Â n = NULL

Layers in AWS Lambda

AWS Lambda refers to the compute service without servers that allows you to execute codes without needing to setup or maintain the digital machines. One of the great feature it has is Lambda Layers which enables people to package and distribute libraries, custom runtime, as well as other dependencie

Lambda Vs Binders in C++ STL

The C++ programming language has features like lambda expressions and binders that let you build more compact and expressive code. To make it simpler to build code that utilizes algorithms to modify data in containers, it is frequently used in conjunction with the STL algorithm library. Here we will

AWS Lambda Functions With AWS CLI

Amazon Web Services (AWS) is a comprehensive cloud computing platform offering many services, including storage, computing, databases, and more. AWS Lambda is a serverless computing service provided by Amazon Web Services (AWS). we can create functions and self-contained applications.With AWS Lambda