Ruby

Day 1

Meet Ruby...She's sometimes quirky, always beautiful, a little mysterious, and absolutely magical. Think Mary Poppins..

...programming was fun again...

Strong or Weak?

						
			4.class

						
			'four'.class

						
			4 + 'four'

Dynamic or Static?

						
			def add_them_up
			    4 + 'four'
			end

			add_them_up

Dynamic or Static?

						
			i = 0
			a = ['100', 100.0]
			
			while i < 2
			  puts a[i].to_i
			  i = i + 1
			end

Purely Object-Oriented

Interpreted

						
			puts "Hello, World!"

						
			language = "Ruby"
			puts "hello, #{language}"

						
			4.methods

						
		x = 4 
		puts 'This appears to be false.' unless x == 4

						
		 puts 'This appears to be true.' if x == 4

						
		 if x == 4
		 	puts 'This appears to be true.'
		 end

						
		 unless x == 4
		 	puts 'This appears to be false.'
		 else
		 	puts 'This appears to be true.'
		 end

						
		  puts 'This appears to be true.' if not true

						
		  puts 'This appears to be true.' if !true

						
		  x = x + 1 while x < 10

						
		  x = x - 1 until x == 1

						
		  while x < 10
		      x = x + 1
		      puts x
		  end

Everything but nil and false evaluate to true.