Clojure – Sequences
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Sequences are created with the help of the ‘seq’ command. Following is a simple example of a sequence creation.
(ns clojure.examples.example (:gen-class)) ;; This program displays Hello World (defn Example [] (println (seq [1 2 3]))) (Example)
The above program produces the following output.
(1 2 3)
Following are the various methods available for sequences.
| Sr.No. | Methods & Description |
|---|---|
| 1 | cons
Returns a new sequence where ‘x’ is the first element and ‘seq’ is the rest. |
| 2 | conj
Returns a new sequence where ‘x’ is the element that is added to the end of the sequence. |
| 3 | concat
This is used to concat two sequences together. |
| 4 | distinct
Used to only ensure that distinct elements are added to the sequence. |
| 5 | reverse
Reverses the elements in the sequence. |
| 6 | first
Returns the first element of the sequence. |
| 7 | last
Returns the last element of the sequence. |
| 8 | rest
Returns the entire sequence except for the first element. |
| 9 | sort
Returns a sorted sequence of elements. |
| 10 | drop
Drops elements from a sequence based on the number of elements, which needs to be removed. |
| 11 | take-last
Takes the last list of elements from the sequence. |
| 12 | take
Takes the first list of elements from the sequence. |
| 13 | split-at
Splits the sequence of items into two parts. A location is specified at which the split should happen. |
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