[함수형프로그래밍] reduce 함수

  function reduce(func,arr,memo){
	var len = arr.length,
  	  i = 0,
      accum = memo;
      
      for(;i<len;i++){
      accum = func(accum,arr[i]);
      }
      
      return accum;
}


var a = [1,2,3,4,5];

var sum = function(x,y){
return x + y;
}

var multiply = function(x,y){
return x*y;
}

console.log(reduce(sum,a,0));

 

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