Method Decrement

sessions/session.go:277–282

Decrement decrements the stored int value saved as "key" by -"n". If value doesn't exist on that "key" then it creates one with the "n" as its value. It returns the new, decremented, value even if it's less than zero.

(key string, n int)

// If value doesn't exist on that "key" then it creates one with the "n" as its value.
// It returns the new, decremented, value even if it's less than zero.
func (s *Session) Decrement(key string, n int) (newValue int) {
	newValue = s.GetIntDefault(key, 0)
	newValue -= n
	s.Set(key, newValue)
	return
}

// GetInt64 same as `Get` but returns its int64 representation,
// if key doesn't exist then it returns -1 and a non-nil error.