title: Groovy equivalent for ruby all and none
body: <p>I want to know if all (or none) of the items of a Collection in Groovy satisfy certain condition.</p>
  
  <p>I know that in ruby (and in c# with linq), you can call methods like <code>all?</code> and <code>none?</code> and pass the condition as a closure to accomplish this.</p>
  
  <p>Is there an equivalent for this methods in Groovy?</p>