Integers, Floats, Strings Cheat Sheet

Name Description Syntax Examples
Integer literal A whole number   3
-552
Float literal A decimal number   42.23
-0.133742
Addition
Subtraction
Multiplication		 Basic math a + b
a - b
a * b		 5.2 + 6.34 # => 11.54
2.59 - 4.89 # => -2.3
5 * 3.7 # => 18.5
Division Mind the difference between integer and float division! a / b # integer division:
6 / 4 # => 1

# float division:
6 / 4.0 # => 1.5
Modulo Return the remainder of a division a % b 13 % 6 # => 1
String literal A string of characters, text   "this is a string"
String interpolation Text with Ruby code embedded within   "another string with #{interpolation}!"