add hw2

node_modules/ramda/es/splitWhen.js

@@ -0,0 +1,37 @@
+import _curry2 from "./internal/_curry2.js";
+/**
+ * Takes a list and a predicate and returns a pair of lists with the following properties:
+ *
+ *  - the result of concatenating the two output lists is equivalent to the input list;
+ *  - none of the elements of the first output list satisfies the predicate; and
+ *  - if the second output list is non-empty, its first element satisfies the predicate.
+ *
+ * @func
+ * @memberOf R
+ * @since v0.19.0
+ * @category List
+ * @sig (a -> Boolean) -> [a] -> [[a], [a]]
+ * @param {Function} pred The predicate that determines where the array is split.
+ * @param {Array} list The array to be split.
+ * @return {Array}
+ * @example
+ *
+ *      R.splitWhen(R.equals(2), [1, 2, 3, 1, 2, 3]);   //=> [[1], [2, 3, 1, 2, 3]]
+ */
+
+var splitWhen =
+/*#__PURE__*/
+_curry2(function splitWhen(pred, list) {
+  var idx = 0;
+  var len = list.length;
+  var prefix = [];
+
+  while (idx < len && !pred(list[idx])) {
+    prefix.push(list[idx]);
+    idx += 1;
+  }
+
+  return [prefix, Array.prototype.slice.call(list, idx)];
+});
+
+export default splitWhen;