Initial commit

06-variables/02-declarations/04-unused-variables-and-blank-identifier/01-unused-variable/main.go

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+// 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
+
+// there's no warning for package-level vars
+var packageLevelVar string
+
+func main() {
+	// unused variable error
+	// var speed int
+
+	// if you use it, the error will be gone
+	// fmt.Println(speed)
+}

06-variables/02-declarations/04-unused-variables-and-blank-identifier/02-blank-identifier/main.go

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+// 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
+
+func main() {
+	var speed int
+
+	// let's assign the variable to the blank-identifier
+	// so that Go compiler won't get grumpy
+	_ = speed
+}