Double Versus Single Quotes In Ruby

Strings in Ruby are specified with double quotes "a string" or single quotes'another string'. The main difference is that double quotes allows:

• string interpolation:

name = 'John'
"Hello #{name}"

• escape sequence :

irb(main):> puts "a\nb"
a
b
=> nil
irb(main):> puts 'a\nb'
a\nb
=> nil