how to do operations inside a list clojure

Performing Operations Inside a List in Clojure

To perform operations inside a list in Clojure, you can use various functions and operators provided by the language. Here are a few examples:

  1. Map: The map function applies a given function to each element of a list and returns a new list with the results. For example, to multiply each element of a list by 2, you can use the following code:

clojure (defn multiply-by-two [lst] (map #(* 2 %) lst))

This code defines a function multiply-by-two that takes a list lst as input and uses map to multiply each element of the list by 2.

  1. Filter: The filter function selects elements from a list that satisfy a given predicate and returns a new list with the selected elements. For example, to filter out even numbers from a list, you can use the following code:

clojure (defn filter-even [lst] (filter even? lst))

This code defines a function filter-even that takes a list lst as input and uses filter with the even? predicate to select only the even numbers from the list.

  1. Reduce: The reduce function applies a binary function to the elements of a list in a cumulative way and returns a single value. For example, to calculate the sum of all elements in a list, you can use the following code:

clojure (defn sum [lst] (reduce + lst))

This code defines a function sum that takes a list lst as input and uses reduce with the + function to calculate the sum of all elements in the list.

These are just a few examples of operations you can perform inside a list in Clojure. Clojure provides many more functions and operators that can be used for different purposes. You can explore the Clojure documentation for more information on the available functions and their usage.