; Run = function ()  {    ; return Array.prototype.splice.call( arguments, -1 )[0].apply( this, arguments )  }; Loop = function ()  {    var      count = -1    , end   = arguments.length -1    , _func = arguments[ end ]    ; while ( ++count < end )      {        ; _func.apply( this, arguments[ count ] )      }  }; Run( 2, 3, 4, function( x, y, z )  {      console.log( x*y*z )  }); Run.call( { name : ‘Run‘ }, 2, 3, 4, function( x, y, z )  {      console.log( this, x*y*z )  }); Loop( [ 2, 3 ], [ 4, 5 ], function ( x, y )  {    ; console.log( x*y )  }); Loop.call( { name : ‘Loop‘ }, [ 2, 3 ], [ 4, 5 ], function ( x, y )  {    ; console.log( this, x*y )  })