Travis build: 1179
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@ -5,9 +5,9 @@ Returns the average of an array, after mapping each element to a value using the
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Use `Array.map()` to map each element to the value returned by `fn`, `Array.reduce()` to add each value to an accumulator, initialized with a value of `0`, divide by the `length` of the array.
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```js
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const averageBy = (arr, fn) => arr.map(fn).reduce((acc, val) => acc + val, 0)/arr.length;
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const averageBy = (arr, fn) => arr.map(fn).reduce((acc, val) => acc + val, 0) / arr.length;
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```
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```js
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averageBy([{ 'n': 4 }, { 'n': 2 }, { 'n': 8 }, { 'n': 6 }], o => o.n); // 5
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averageBy([{ n: 4 }, { n: 2 }, { n: 8 }, { n: 6 }], o => o.n); // 5
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```
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@ -28,6 +28,7 @@ const httpPost = (url, callback, data = null, err = console.error) => {
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const newPost = {
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"userId": 1,
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"id": 1337,
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@ -9,5 +9,5 @@ const maxBy = (arr, fn) => Math.max(...arr.map(fn));
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```
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```js
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maxBy([{ 'n': 4 }, { 'n': 2 }, { 'n': 8 }, { 'n': 6 }], o => o.n); // 8
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maxBy([{ n: 4 }, { n: 2 }, { n: 8 }, { n: 6 }], o => o.n); // 8
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```
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@ -9,5 +9,5 @@ const minBy = (arr, fn) => Math.min(...arr.map(fn));
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```
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```js
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minBy([{ 'n': 4 }, { 'n': 2 }, { 'n': 8 }, { 'n': 6 }], o => o.n); // 8
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minBy([{ n: 4 }, { n: 2 }, { n: 8 }, { n: 6 }], o => o.n); // 8
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```
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@ -9,5 +9,5 @@ const sumBy = (arr, fn) => arr.map(fn).reduce((acc, val) => acc + val, 0);
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```
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```js
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sumBy([{ 'n': 4 }, { 'n': 2 }, { 'n': 8 }, { 'n': 6 }], o => o.n); // 20
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sumBy([{ n: 4 }, { n: 2 }, { n: 8 }, { n: 6 }], o => o.n); // 20
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```
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