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

I made a vim macro for this:

" Inspect the variable on the current line (in Ruby)
autocmd FileType ruby nmap ,i ^"oy$Iputs "A: #{("opA).inspect}"

Put the variable you'd like to inspect on a line by itself, then type ,i (comma then i) in normal mode. It turns this:

foo

into this:

puts "foo: #{(foo).inspect}"

This is nice because it doesn't have any external dependencies (e.g. you don't have to have a library loaded up to use it).