# Constants begin with an uppercase letter.
# Int
number = 42
otherNumber = 37
maxInt = (2**(0.size * 8 -2) -1)
Mb = 1_048_576 # Constant
# Double
exp = 2.71828
billion = 1E+9
# String
greeting = "Hello"
# MultiLine String
text1 = "this is some\n" + \
"multiLine text"
text2 = """this is some
multiLine text"""
# Bool
sunIsStar = true
earthIsStar = false
# Character "A"
charA = 'A' # "\x41", 65.chr
# Tuple (Int, String)
one = [1, "one"]
puts "maxInt is #{maxInt}"
puts "billion is #{billion}"
puts "text1 is '#{text1}'"
puts "text2 is '#{text2}'"
puts "charA is '#{charA}'"
puts "one is #{one}"