How to read from a file in Clojure

Overview

Most times we want to work with an external file, especially when it involves reading text. So, let's learn how to read a file in Clojure. We will be making use of the slurp method. The slurp method is used to read a file.

Syntax

Parameter

• filename: The slurp method receives a single parameter which is the file name.

Return value

The slurp method returns a string from a file.

Example

Explanation

The above code example illustrates how we use the slurp method to read a text file.

• Line 3: We declare a function func.
• Line 4: We define a variable file1, and then we use the slurp method on the file.txt file.

Note: We have the main.clj, which is our code, and the file.txt, which is the file we are reading from.

• Line 5: We use the println method to print out the string returned by the slurp method.
• Line 6: We call the function func.