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output an array without for or while loop

/ Published in: JavaScript
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  1. var arr = [[1,2,3],[5,4,3],[7,6,5]];
  2. var out= (function($){
  3. 	return $.length? String($[0]).concat("\n").concat(arguments.callee($.slice(1))): "";
  4. })(arr);
  5. alert(out);
  6. /*output: 1,2,3
  7.           5,4,3
  8.           7,6,5
  9. */

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