lib/type/set.js
function spop() {
  var ind = Math.floor(Math.random() * this._keys.length)
    , val = this._keys[ind];
  this.delKey(val);
  return val;
}
function spop() {
  var ind = Math.floor(Math.random() * this._keys.length)
    , val = this._keys[ind];
  this.delKey(val);
  return val;
}
function spop ( ) { var ind = Math . floor ( Math . random ( ) * this . _keys . length ) , val = this . _keys [ ind ] ; this . delKey ( val ) ; return val ; }
Removes and returns a random element from the set.
Removes and returns a random element from the set .