add assert in Singleton. see #109
add assert in Singleton. see #109

guker/muduo,shenhzou654321/muduo,flyfeifan/muduo,westfly/muduo,devsoulwolf/muduo,SourceInsight/muduo,zxylvlp/muduo,zhuangshi23/muduo,floristt/muduo,shuang-shuang/muduo,dhanzhang/muduo,dhanzhang/muduo,wangweihao/muduo,yunhappy/muduo,dhanzhang/muduo,Cofyc/muduo,danny200309/muduo,devsoulwolf/muduo,lizj3624/muduo,SourceInsight/muduo,floristt/muduo,SourceInsight/muduo,ywy2090/muduo,tsh185/muduo,danny200309/muduo,june505/muduo,mitliucak/muduo,jxd134/muduo,shenhzou654321/muduo,KunYi/muduo,huan80s/muduo,lvshiling/muduo,pthreadself/muduo,shenhzou654321/muduo,wangweihao/muduo,DongweiLee/muduo,devsoulwolf/muduo,dhanzhang/muduo,devsoulwolf/muduo,nestle1998/muduo,zouzl/muduo-learning,Cofyc/muduo,lizj3624/muduo,devsoulwolf/muduo,daodaoliang/muduo,Cofyc/muduo,ywy2090/muduo,floristt/muduo,KublaikhanGeek/muduo,june505/muduo,guker/muduo,kidzyoung/muduo,zhuangshi23/muduo,zouzl/muduo-learning,youprofit/muduo,yunhappy/muduo,danny200309/muduo,lvmaoxv/muduo,DongweiLee/muduo,Cofyc/muduo,decimalbell/muduo,zxylvlp/muduo,youprofit/muduo,huan80s/muduo,KunYi/muduo,kidzyoung/muduo,fc500110/muduo,SuperMXC/muduo,zhanMingming/muduo,Cofyc/muduo,decimalbell/muduo,KingLebron/muduo,shenhzou654321/muduo,shenhzou654321/muduo,lizj3624/muduo,KublaikhanGeek/muduo,zxylvlp/muduo,penyatree/muduo,decimalbell/muduo,lizhanhui/muduo,lvmaoxv/muduo,flyfeifan/muduo,danny200309/muduo,ucfree/muduo,huan80s/muduo,westfly/muduo,lizj3624/muduo,floristt/muduo,tsh185/muduo,ucfree/muduo,pthreadself/muduo,lizhanhui/muduo,wangweihao/muduo,wangweihao/muduo,mitliucak/muduo,daodaoliang/muduo,zhuangshi23/muduo,huan80s/muduo,jerk1991/muduo,huan80s/muduo,SuperMXC/muduo,ucfree/muduo,KingLebron/muduo,lizj3624/muduo,mitliucak/muduo,ucfree/muduo,floristt/muduo,jerk1991/muduo,KingLebron/muduo,SourceInsight/muduo,decimalbell/muduo,westfly/muduo,KingLebron/muduo,SuperMXC/muduo,xzmagic/muduo,SuperMXC/muduo,zhanMingming/muduo,danny200309/muduo,mitliucak/muduo,fc500110/muduo,jxd134/muduo,nestle1998/muduo,decimalbell/muduo,dhanzhang/muduo,SourceInsight/muduo,xzmagic/muduo,KingLebron/muduo,zouzl/muduo-learning,mitliucak/muduo,SuperMXC/muduo,shuang-shuang/muduo,ucfree/muduo,wangweihao/muduo,penyatree/muduo,lvshiling/muduo