add: x-tba/foundations

x-tba/foundations/02-variables/03-conversion/main.go

@@ -0,0 +1,30 @@
+// For more tutorials: https://blog.learngoprogramming.com
+//
+// Copyright © 2018 Inanc Gumus
+// Learn Go Programming Course
+// License: https://creativecommons.org/licenses/by-nc-sa/4.0/
+//
+
+package main
+
+import "fmt"
+
+func main() {
+	min := int8(127)
+	max := int16(1000)
+
+	fmt.Println(max + int16(min))
+
+	// EXPLANATION
+	//
+	// `int8(max)` destroys the information of max
+	// It reduces it to 127
+	// Which is the maximum value of int8
+	//
+	// Correct conversion is int16(min)
+	// Because, int16 > int8
+	// When you do so, min doesn't lose information
+	//
+	// You will learn more about this in
+	// the "Go Type System" section.
+}