Does " and ' have any difference?

Question

When are you supposed to use ' and " ?

Answer 1

In Ruby yes, they have few important differences; double quotes ( " ) allows...

- 'string interpolation':
my_var = 'SoloLearn';
puts "Enjoy #{my_var}!"

- 'escape sequence':
puts 'Enjoy\nSololearn' # print exactly 'Enjoy\nSololearn' at once line
puts "Enjoy\nSololearn" # print 'Enjoy', and next 'Sololearn' at new line