String Interpolation With Instance Variables
Last updated
Was this helpful?
Last updated
Was this helpful?
Was this helpful?
When using regular variables with string interpolation in Ruby, they must be wrapped in curly braces (e.g. "This is a #{variable}"
). With instance variables (and class and global variables) you can just use the octothorp followed directly by the variable.
Here is an example of this in action:
class Person
def initialize(name)
@name = name
end
def whoami
puts "I am #@name"
end
end
bob = Person.new("bob")
#=> #<Person:0x007fdaf3291618 @name="bob">
bob.whoami
# I am bob
This is a handy shortcut, but may affect readability and/or result in an interpolation error at some point. Your mileage may vary.
h/t Josh Davey