Merge pull request #447 from kriadmin/master

[FEATURE] add snippet sumPower

snippets/sumPower.md

@@ -0,0 +1,18 @@
+### sumPower
+
+Returns the sum of the powers of all the numbers from `start` to `end` (both inclusive).
+
+Use `Array.fill()` to create an array of all the numbers in the target range, `Array.map()` and the exponent operator (`**`) to raise them to `power` and `Array.reduce()` to add them together.
+Omit the second argument, `power`, to use a default power of `2`.
+Omit the third argument, `start`, to use a default starting value of `1`.
+
+```js
+const sumPower = (end,power = 2,start = 1) =>
+  Array(end + 1 - start).fill(0).map((x,i) => (i+start) ** power).reduce((a,b) => a+b,0)
+```
+
+```js
+sumPower(10); // 385
+sumPower(10,3); //3025
+sumPower(10,3,5); //2925
+```

tag_database

@@ -140,6 +140,7 @@ splitLines:string
 spreadOver:adapter
 standardDeviation:math
 sum:math
+sumPower:math
 symmetricDifference:array
 tail:array
 take:array