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snippets/countOccurrences.md

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+### countOccurrences
+
+Counts the occurences of a value in an array.
+
+Use `Array.reduce()` to increment a counter each time you encounter the specific value inside the array.
+
+```js
+const countOccurrences = (arr, value) => arr.reduce((a, v) => v === value ? a + 1 : a + 0, 0);
+// countOccurrences([1,1,2,1,2,3], 1) -> 3
+```