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arithmetic.md

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Arithmetic

Computers were designed to run lots of calculations, so its easy to do maths. You can use the following basic math functions:

  • + add numbers together
  • - subtract numbers from each other
  • * multiply numbers together
  • / divide numbers

Look at these examples of Clojure code and their equivalent math expression:

(+ 1 1)         ;=> 1 + 1 = 2
(- 12 4 1)      ;=> 12 - 4 - 1 = 7
(* 13 2 10 2)   ;=> 13 * 2 * 10 * 2 = 520
(/ 27 9)        ;=> 27 / 9 = 3

;;
(+ 4/3 7/8)   ;=> 53/24
(- 9 4.2 1/2) ;=> 4.3
(/ 27/2 1.5)  ;=> 9.0

Math looks a little different in Clojure because +, -, *, / are functions, which take numbers as arguments.

Info::

The ClojureScript REPL in this web page does not return values as a Ratio type. ClojureScript is compiled into JavaScript which does not support a Ratio type.