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+/*
+ * CSCI 3155: Lab 3 JavaScript Worksheet
+ *
+ * This worksheet is a place to experiment with JavaScript expressions.
+ */
+
+// The new language feature in Lab 3 is first-class functions.
+
+const id = function (x) {
+ return x;
+};
+
+const plus = (x) => (y) => x + y;
+
+const j = plus(3)(4);
+
+id("Hello, ") + j;
+
+const factorial = function f(n) {
+ return n === 0 ? 1 : n * f(n - 1);
+};
+
+const factorial3 = factorial(3);
+factorial3;