Kebab file names

snippets/drop-while.md

@@ -0,0 +1,24 @@
+---
+title: Drop list elements from the left based on function
+tags: array
+cover: colorful-lounge
+firstSeen: 2018-01-26T12:23:18+02:00
+lastUpdated: 2020-10-19T18:51:03+03:00
+---
+
+Removes elements in an array until the passed function returns `true`.
+Returns the remaining elements in the array.
+
+- Loop through the array, using `Array.prototype.slice()` to drop the first element of the array until the value returned from `func` is `true`.
+- Return the remaining elements.
+
+```js
+const dropWhile = (arr, func) => {
+  while (arr.length > 0 && !func(arr[0])) arr = arr.slice(1);
+  return arr;
+};
+```
+
+```js
+dropWhile([1, 2, 3, 4], n => n >= 3); // [3, 4]
+```