code restructuring

Author: Rajeev Kumar Singh

01-hello-world/hello.go renamed to 01-hello-world/main.go

@@ -1,4 +1,5 @@
 package main
+
 import "fmt"
 
 func main() {
@@ -15,5 +16,8 @@ func main() {
 	var myHexNumber = 0xFF  // Use prefix '0x' or '0X' for declaring hexadecimal numbers
 	var myOctalNumber = 034 // Use prefix '0' for declaring octal numbers
 
-	fmt.Printf("%d, %d, %d, %#x, %#o\n", myInt8, myInt, myUint, myHexNumber, myOctalNumber)
-}
+	var myFloat32 float32 = 4.5
+	var myFloat = 9.12 // // Type inferred as `float64`
+
+	fmt.Printf("%d, %d, %d, %#x, %#o %f %f\n", myInt8, myInt, myUint, myHexNumber, myOctalNumber, myFloat32, myFloat)
+}

02-variables/variable_declarations.go renamed to 02-variables/01-variable-declaration/main.go

@@ -0,0 +1,17 @@
+package main
+
+import "fmt"
+
+func main() {
+	var myBoolean bool = true
+	var anotherBoolean = false // Inferred type
+
+	var truth = 3 <= 5
+	var falsehood = 10 != 10
+
+	// Short Circuiting
+	var res1 = 10 > 20 && 5 == 5     // Second operand is not evaluated since first evaluates to false
+	var res2 = 2*2 == 4 || 10%3 == 0 // Second operand is not evaluated since first evaluates to true
+
+	fmt.Println(myBoolean, anotherBoolean, truth, falsehood, res1, res2)
+}

02-variables/type_inference.go renamed to 02-variables/02-type-inference/main.go

@@ -0,0 +1,33 @@
+package main
+
+import "fmt"
+
+func main() {
+	// === Creating complex numbers ====
+	/*
+		complex64: both real and imaginary parts are of float32 type.
+		complex128: both real and imaginary parts are of float64 type.
+	*/
+	var x complex64 = 3.4 + 2.9i
+	var y = 5 + 7i // Type inferred as `complex128` (default type for complex numbers)
+
+	fmt.Println(x, y)
+
+	// Creating complex no from variables
+	var a1 = 4.5
+	var a2 = 7.1
+
+	var c = complex(a1, a2) // a1 + a2*i won't work
+	fmt.Println(c)
+
+	// ===== Complex No Operations =====
+	var a = 3 + 5i
+	var b = 2 + 4i
+
+	var res1 = a + b
+	var res2 = a - b
+	var res3 = a * b
+	var res4 = a / b
+
+	fmt.Println(res1, res2, res3, res4)
+}

02-variables/zero_values.go renamed to 02-variables/03-zero-values/main.go

@@ -1,9 +1,12 @@
 package main
+
 import "fmt"
 
 func main() {
+	// Normal String (Can not contain newlines, and can have escape characters like `\n`, `\t` etc)
 	var website = "\thttps://www.callicoder.com\t\n"
 
+	// Raw String (Can span multiple lines. Escape characters are not interpreted)
 	var siteDescription = `\t\tCalliCoder is a programming blog where you can find
                            practical guides and tutorials on programming languages, 
                            web development, and desktop app development.\t\n`