dongjinahn · February 14, 2018 08:55
diff --git a/1.js b/1.js
 let sum = 0;
 for (let i = 0; i < arr.length; ++i) {
  const item = arr[i];
  sum += item.value;
 }
diff --git a/2.py b/2.py
 sum = 0
 for item in arr:
   sum += item["value"]
diff --git a/3.js b/3.js
 let sum = 0;
 arr.forEach(function(item) {
   sum += item.value;
 });
diff --git a/4.js b/4.js
 const sum = arr.reduce(function(acc, item) {
   return acc + item.value;
 }, 0);
diff --git a/5.js b/5.js
 const sum = arr.reduce((acc, item) => acc + item.value, 0);
	const sum = arr.reduce(function(acc, item) {
	return acc + item.value;
	}, 0);
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