mini-caffe：提取所有层特征值

官方代码托管地址：https://github.com/luoyetx/mini-caffe

在Net类中增加以下方法：

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const int Net::extract_all_blobs() const {   for(int blob_idx = 0; blob_idx < blobs_.size(); blob_idx++) {     shared_ptr<Blob> blob_ptr = blobs_[blob_idx];     const float *pData = blob_ptr->cpu_data();         // write to file       char path[256];       char id[8];         strcpy(path, "./minicaffe_blobs_data/");       sprintf(id, "%d", blob_idx);       strcat(path, id);       strcat(path, ".txt");         FILE *fp = fopen(path, "w+");       if(!fp)         fprintf(stderr, "error open file\n");         // header       //\ value to key       char blob_name[256];       for (auto iter : blob_names_index_)         if (iter.second == blob_idx){           strcpy(blob_name, iter.first.c_str());           break;         }         fprintf(fp, blob_name);       fprintf(fp, "\n");         for (int w = 0; w < blob_ptr->count(); w++)         fprintf(fp, "%f\n", pData[w]);       fclose(fp);   }     return 0; }