feat(array): add filterByPredicates

Author: librz

snippets/array/filter-by-predicates.md

@@ -0,0 +1,34 @@
+---
+title: Filter by predicates
+category: Array
+---
+
+**JavaScript version**
+
+```js
+const filterByPredicates = (arr, predicates, condition = "and") => arr.filter(
+  item => condition === "and" ? predicates.every(func => func(item)) : predicates.some(func => func(item))
+)
+```
+
+**TypeScript version**
+
+```js
+const filterByPredicates = <T, _>(
+  arr: T[], 
+  predicates: Array<(val: T) => boolean>, 
+  condition: "and" | "or" = "and"
+): T[] => arr.filter(
+  item => condition === "and" ? predicates.every(func => func(item)) : predicates.some(func => func(item))
+)
+```
+
+**Example**
+
+```js
+const nums = [-2, -1, 0, 1, 2, 3.1];
+const isEven = num => num % 2 === 0;
+const isPositive = num => num > 0;
+filterByPredicates(nums, [isPositive, Number.isInteger], "and"); // [1, 2]
+filterByPredicates(nums, [isEven, isPositive], "or"); // [-2, 0, 1, 2, 3.1] 
+```