2022-12-03

chapter-2/04_unused_variables.go

@@ -0,0 +1,18 @@
+// variables must be read at least once
+// golangci-lint will warn but the compiler will allow it
+
+// package level vars do not need to be read (another reason not to use them)
+
+// constants do not need to be read, if they are not used they are excluded from the build
+
+package main
+
+import "fmt"
+
+func main() {
+	x := 10
+	x = 20
+
+	fmt.Println(x)
+	x = 30
+}