What is the drop method in Clojure Sequence?

What is a sequence?

A sequence is a data storage structure that holds a collection of data objects. In Clojure, it can be seen as a logical list. The seq method is used to build a sequence.

What is the drop method in Clojure Sequence?

The drop sequence method will return a sequence with the remaining element after removing a specified number of elements from the beginning of the sequence.

Use case

This method can be used to remove elements in a sequence.

Syntax

(drop number seqq)
Syntax of drop sequence

Parameters

This method takes the following parameters:

  • seqq: This represents the sequence containing element.
  • number: This is the number of elements you wish to remove from the sequence, starting from the first element.

Return value

This method returns a sequence containing the elements left after the removal.

Example

(ns clojure.examples.example
   (:gen-class))
(defn dropp []
   (def seq1 (seq [1 2 8 9 1 0 6 8 2]))
   (println (drop 3 seq1)))
(dropp)

Explanation

  • Line 3: We define a function dropp.
  • Line 4: We define our sequence seq1.
  • Line 5: We use the drop method to remove 3 elements from the sequence because according to the syntax, we pass the number of elements we want to remove, and in the above example we passed 3 . So, elements 1, 2, and 8 will be removed, as we would see in the output.
  • Line 6: We call the dropp function, and we observe that the output returned all the elements of the sequence except for the first three elements, which are 1,2, and 8.

Free Resources

License: Creative Commons-Attribution-ShareAlike 4.0 (CC-BY-SA 4.0)