Clojure - Operators

An operator is a symbol that tells the compiler to perform specific mathematical or logical manipulations.

Clojure has the following types of operators −

  • Arithmetic operators
  • Relational operators
  • Logical operators
  • Bitwise operators

Note − In Clojure, operators and operands work in the following syntax manner.

Syntax

(operator operand1 operand2 operandn)

For example,

Example

(+ 1 2)

The above example does an arithmetic operation on the numbers 1 and 2.

Arithmetic Operators

Clojure language supports the normal Arithmetic operators as any language. Following are the Arithmetic operators available in Clojure.

Show Examples

Operator Description Example
+ Addition of two operands (+ 1 2) will give 3
− Subtracts second operand from the first (- 2 1) will give 1
* Multiplication of both operands (* 2 2) will give 4
/ Division of numerator by denominator (float (/ 3 2)) will give 1.5
inc Incremental operators used to increment the value of an operand by 1 inc 5 will give 6
dec Incremental operators used to decrement the value of an operand by 1 dec 5 will give 4
max Returns the largest of its arguments max 1 2 3 will return 3
min Returns the smallest of its arguments min 1 2 3 will return 1
rem Remainder of dividing the first number by the second rem 3 2 will give 1

Relational Operators

Relational operators allow comparison of objects. Following are the relational operators available in Clojure.

Show Examples

Operator Description Example
= Tests the equality between two objects (= 2 2) will give true
not= Tests the difference between two objects (not = 3 2) will give true
< Checks to see if the left object is less than the right operand (< 2 3) will give true
<= Checks to see if the left object is less than or equal to the right operand (<= 2 3) will give true
> Checks to see if the left object is greater than the right operand (> 3 2) will give true
>= Checks to see if the left object is greater than or equal to the right operand (>= 3 2) will give true

Logical Operators

Logical operators are used to evaluate Boolean expressions. Following are the logical operators available in Groovy.

Show Examples

Operator Description Example
and This is the logical “and” operator (or true true) will give true
or This is the logical “or” operator (and true false) will give false
not This is the logical “not” operator (not false) will give true

The following code snippet shows how the various operators can be used.

Bitwise Operators

Clojure provides four bitwise operators. Following are the bitwise operators available in Clojure.

Show Examples

Sr.No. Operator & Description
1

bit-and

This is the bitwise “and” operator
2

bit-or

This is the bitwise “or” operator
3

bit-xor

This is the bitwise “xor” or Exclusive ‘or’ operator
4

bit-not

This is the bitwise negation operator

Following is the truth table showcasing these operators.

p q p&q p | q p ^ q
0 0 0 0 0
0 1 0 1 1
1 1 1 1 0
1 0 0 1 1

Operator Precedence

As is the case with LISPs in general, there is no need to worry about operator precedence. This is one of the benefits of S-Expressions and prefix notation. All functions evaluate left to right and inside out. The operators in Clojure are just functions, and everything is fully parenthesized.

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