update baby-steps; add calculator initial operations b00tc4mp#1

Author: manuelbarzi

staff/manuel-barzi/playground/baby-steps/index.ts

@@ -0,0 +1,5 @@
+let a: number
+
+a = 123
+
+console.log(a)

staff/manuel-barzi/playground/calculator/add.test.ts

@@ -0,0 +1,37 @@
+import { add } from "./add"
+
+console.info("TEST add")
+
+
+console.info("CASE a is 10 and b is 20 then r 30")
+
+{
+    const r = add(10, 20)
+
+    console.assert(r === 30, 'r is 30')
+}
+
+
+console.info("CASE a is -10 and b is 20 then r 10")
+
+{
+    const r = add(-10, 20)
+
+    console.assert(r === 10, "r is 10")
+}
+
+console.info("CASE a is -10 and b is -20 then r -30")
+
+{
+    const r = add(-10, -20)
+
+    console.assert(r === -30, "rs is -30")
+}
+
+console.info("CASE a is NaN and b is 20 then r NaN")
+
+{
+    const r = add(NaN, 20)
+
+    console.assert(isNaN(r), "r is NaN")
+}

staff/manuel-barzi/playground/calculator/add.ts

@@ -0,0 +1 @@
+export const add = (a: number, b: number): number => a + b

staff/manuel-barzi/playground/calculator/div.test.ts

@@ -0,0 +1,21 @@
+import { pow } from "./pow"
+
+console.info("TEST pow")
+
+
+console.info("CASE num is 2 and exp is 3 then r is 8")
+
+{
+    const r = pow(2, 3)
+
+    console.assert(r === 8, "r is 8")
+}
+
+
+console.info("CASE num is 10 and exp is 2 then r is 100")
+
+{
+    const r = pow(10, 2)
+
+    console.assert(r === 100, "r is 100")
+}

staff/manuel-barzi/playground/calculator/mul.test.ts

@@ -0,0 +1,5 @@
+export const pow = (num: number, exp: number): number => {
+    // TODO implement me
+
+    return -1
+}