chore(i8n,learn): processed translations

curriculum/challenges/espanol/10-coding-interview-prep/rosetta-code/accumulator-factory.md

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+---
+id: 594810f028c0303b75339ace
+title: Accumulator factory
+challengeType: 5
+forumTopicId: 302222
+dashedName: accumulator-factory
+---
+
+# --description--
+
+A problem posed by [Paul Graham](https://en.wikipedia.org/wiki/Paul_Graham_(programmer)) is that of creating a function that takes a single (numeric) argument and which returns another function that is an accumulator. The returned accumulator function in turn also takes a single numeric argument, and returns the sum of all the numeric values passed in so far to that accumulator (including the initial value passed when the accumulator was created).
+
+# --instructions--
+
+Create a function that takes a number $n$ and generates accumulator functions that return the sum of every number ever passed to them.
+
+**Rules:**
+
+Do not use global variables.
+
+**Hint:**
+
+Closures save outer state.
+
+# --hints--
+
+`accumulator` should be a function.
+
+```js
+assert(typeof accumulator === 'function');
+```
+
+`accumulator(0)` should return a function.
+
+```js
+assert(typeof accumulator(0) === 'function');
+```
+
+`accumulator(0)(2)` should return a number.
+
+```js
+assert(typeof accumulator(0)(2) === 'number');
+```
+
+Passing in the values 3, -4, 1.5, and 5 should return 5.5.
+
+```js
+assert(testFn(5) === 5.5);
+```
+
+# --seed--
+
+## --after-user-code--
+
+```js
+const testFn = typeof accumulator(3) === 'function' && accumulator(3);
+if (testFn) {
+  testFn(-4);
+  testFn(1.5);
+}
+```
+
+## --seed-contents--
+
+```js
+function accumulator(sum) {
+
+}
+```
+
+# --solutions--
+
+```js
+function accumulator(sum) {
+  return function(n) {
+    return sum += n;
+  };
+}
+```