Ruby 2.0 Works Hard So You Can Be Lazy - Pat ShaughnessyLazy enumeration isn’t magic; it’s just a matter of hard work Ruby 2.0’s new lazy enumerator feature seems like magic. In case you haven’t tried it yet, it allows you to iterate over an infinite series of values and take just the values you want. It brings the functional programming concept of lazy evaluation to Ruby - at least for enumerations. For example, in Ruby 1.9 and earlier you would run i
{{#tags}}- {{label}}
{{/tags}}