Lesson 10: Function signatures

a.cheprasov · a.cheprasov · commit 9fb070406cc3 · 2023-04-19T21:58:59.000+03:00
diff --git a/public/sandbox.js b/public/sandbox.js
@@ -1,15 +1,22 @@
 "use strict";
+// let greet: Function;
+// example 1
 var greet;
-greet = function () {
-    console.log('hello again, world');
+greet = function (name, greeting) {
+    console.log("".concat(name, " says ").concat(greeting));
 };
-var add = function (a, b, c) {
-    if (c === void 0) { c = 10; }
-    console.log(a + b);
-    console.log(c);
+// example 2
+var calc;
+calc = function (numOne, numTwo, action) {
+    if (action === 'add') {
+        return numOne + numTwo;
+    }
+    else {
+        return numOne - numTwo;
+    }
 };
-add(5, 10, 20);
-var minus = function (a, b) {
-    return a + b;
+// example 3
+var logDetails;
+logDetails = function (ninja) {
+    console.log("".concat(ninja.name, " is ").concat(ninja.age, " years old"));
 };
-var result = minus(10, 7);
diff --git a/src/sandbox.ts b/src/sandbox.ts
@@ -1,18 +1,27 @@
-let greet: Function;
+// let greet: Function;
 
-greet = () => {
-    console.log('hello again, world');
+// example 1
+let greet: (a: string, b: string) => void;
+greet = (name: string, greeting: string) => {
+    console.log(`${name} says ${greeting}`)
 }
 
-const add = (a: number, b: number, c: number | string = 10): void => {
-    console.log(a + b);
-    console.log(c);
+// example 2
+let calc: (a: number, b: number, c: string) => number;
+
+calc = (numOne: number, numTwo: number, action: string) => {
+    if (action === 'add') {
+        return numOne + numTwo;
+    } else {
+        return numOne - numTwo;
+    }
 }
 
-add(5, 10, 20);
+// example 3
+let logDetails: (obj: {name: string, age: number}) => void;
 
-const minus = (a: number, b: number) => {
-    return a + b;
-}
+type person = {name: string, age: number};
 
-let result = minus(10, 7);
+logDetails = (ninja: person) => {
+    console.log(`${ninja.name} is ${ninja.age} years old`);
+}
