Ruby - print the variable name and then its value

Question

What is the best way to write a function (or something DSLish) that will allow me to write this code in Ruby. How would I construct the function write_pair?

Answer 1

def write_pair var, binding
  puts "#{ var } = #{ eval(var, binding)}"
end


username = "tyndall"
write_pair "username", binding

This seems weird because binding is never defined, but it works. From Ruby: getting variable name:

The binding() method gives a Binding object which remembers the context at the point the method was called. You then pass a binding into eval(), and it evaluates the variable in that context.

Be sure to pass a string, not the variable.