Method RemoveClient

backend/internal/service/Markdown.go:114–122

RemoveClient 注销客户端，并关闭通道

(ch chan string)

// RemoveClient 注销客户端，并关闭通道
func (d *Document) RemoveClient(ch chan string) {
	d.mu.Lock()
	defer d.mu.Unlock()

	if _, ok := d.Clients[ch]; ok {
		delete(d.Clients, ch)
		close(ch)
	}
}