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The Zen of Ruby

String Interpolation

You can always use plain old + or << to add a variable value into a string:

drink = "espresso" "I love " + drink # ==> I love espresso "I love " << drink # ==> I love espresso

But if you want to do it for non-string values, you have to use .to_s to make it a string:

age = 26 "I am " + age.to_s + " years old." # ==> "I am 26 years old." "I am " << age.to_s << " years old." # ==> "I am 26 years old."

This is complicated, and complicated is not the Ruby way. A better way to do this is with string interpolation. The syntax looks like this:

"I love #{drink}." # ==> I love espresso. "I am #{age} years old." # ==> I am 26 years old.

All you need to do is place the variable name inside #{} within a string!

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