original_string: function each (callable $fn)
    {
      foreach ($this->getIterator () as $k => $v)
        if ($fn ($v, $k) === false) break;
      return $this;
    }
code: function each (callable $fn)
    {
      foreach ($this->getIterator () as $k => $v)
        if ($fn ($v, $k) === false) break;
      return $this;
    }
code_tokens: function each ( callable $ fn ) { foreach ( $ this -> getIterator ( ) as $ k => $ v ) if ( $ fn ( $ v , $ k ) === false ) break ; return $ this ; }
docstring: Calls a function for every element in the iterator.
  
  @param callable $fn A callback that receives the current value and key; it can, optionally, return `false` to break
  the loop.
  @return $this
docstring_tokens: Calls a function for every element in the iterator .