inserting value of a variable in a string


person = "Matz!"
puts "Hello, #{person}" # => Hello, Matz!

1.	Append one string to another with the + method:
2.	append a string with the << method:
3.	Concatenate (join) strings together, using a +
4.	Using the + symbol concatenates the two strings "
5.	Push several strings into one
6.	Encode command in string

inserting value of a variable in a string : String Concatenation « String « Ruby