qq_23557345的博客

1.the difference of "string str=null;" and "tring str="";"string str=null just declare the variable str,which points to a null,and don't allocate memory.string str="" has allocated memory and str ...

1.安装显卡驱动安装相关依赖sudo apt-get install libprotobuf-dev libleveldb-dev libsnappy-dev libopencv-dev libhdf5-serial-dev protobuf-compilersudo apt-get install --no-install-recommends libboost-all-devsud...