add hw2

node_modules/ramda/es/pick.js

@@ -0,0 +1,38 @@
+import _curry2 from "./internal/_curry2.js";
+/**
+ * Returns a partial copy of an object containing only the keys specified. If
+ * the key does not exist, the property is ignored.
+ *
+ * @func
+ * @memberOf R
+ * @since v0.1.0
+ * @category Object
+ * @sig [k] -> {k: v} -> {k: v}
+ * @param {Array} names an array of String property names to copy onto a new object
+ * @param {Object} obj The object to copy from
+ * @return {Object} A new object with only properties from `names` on it.
+ * @see R.omit, R.props
+ * @example
+ *
+ *      R.pick(['a', 'd'], {a: 1, b: 2, c: 3, d: 4}); //=> {a: 1, d: 4}
+ *      R.pick(['a', 'e', 'f'], {a: 1, b: 2, c: 3, d: 4}); //=> {a: 1}
+ */
+
+var pick =
+/*#__PURE__*/
+_curry2(function pick(names, obj) {
+  var result = {};
+  var idx = 0;
+
+  while (idx < names.length) {
+    if (names[idx] in obj) {
+      result[names[idx]] = obj[names[idx]];
+    }
+
+    idx += 1;
+  }
+
+  return result;
+});
+
+export default pick;