dbg

Overview ¶

Package dbg provides yet another stylized debug printer.

Usage:

dbg.Style.Log(args...)
dbg.Style.Logf(format, args...)

Where Style may be: NoOp, Plain, FileLine, or Func.

Nothing is printed with NoOp style, no args, or a nil args[0].

If args[0] is an error, both Log and Logf return that error; otherwise, these return nil. Use this to log a returned error,

return dbg.Style.Log(err)

Use style variables to selectively enable output,

// PACKAGE.go
var Err = dbg.NoOp

	...
	Err.Log(err)
	...

// PACKAGE_test.go
func TestMain(m *testing.M) {
	flag.Parse()
	if testing.Verbose() {
		Err = dbg.FileLine
	}
	os.Exit(m.Run())
}