Function NewTee

zapcore/tee.go:37–46

NewTee creates a Core that duplicates log entries into two or more underlying Cores. Calling it with a single Core returns the input unchanged, and calling it with no input returns a no-op Core.

(cores ...Core)

// Calling it with a single Core returns the input unchanged, and calling
// it with no input returns a no-op Core.
func NewTee(cores ...Core) Core {
	switch len(cores) {
	case 0:
		return NewNopCore()
	case 1:
		return cores[0]
	default:
		return multiCore(cores)
	}
}

func (mc multiCore) With(fields []Field) Core {
	clone := make(multiCore, len(mc))