sort_by with Boolean in Rails

Question

I know that boolean in Ruby are classes. But from practical point of view, is there a way to sort an array by boolean (i.e., with all elements with true value first)?

Thank you.

Answer 1

You could cheat and get it to return a number:

sort_by { |a| a.thing ? 0 : 1 }

Answer 2

You could use partition and then flatten the results:

partition{|v| v == true}.flatten