假设需要添加一个名为”my_data”的数据到哈希表中，可以通过以下代码实现：
int ret;
char key[] = "my_key"; // example key, must match the key type of the hash table
void *data = malloc(sizeof(int)); // allocate memory for data
*(int*)data = 42; // set the value of data
// add key and data to hash table
ret = rte_hash_add_key_data(hash_table, &key, data);
if (ret < 0) {
printf("Failed to add key and data to hash table\n");
free(data); // free memory allocated for data if failed to add it to the hash table
}
这里将一个整数值42存储到了动态分配的内存空间中，并将该内存地址作为参数传递给rte_hash_add_key_data函数。在函数内部，会以该内存地址为准进行哈希计算和存储。
![ValueError: Key mathtext.fontset: 'Times New Roman' is not a valid value for mathtext.fontset; supported values are ['dejavusans', 'dejavuserif', 'cm', 'stix', 'stixsans', 'custom']](https://linuxcpp.0voice.com/zb_users/upload/2023/05/202305162239514045498.png)
![feature_importance = rf.OOBPermutedPredictorDeltaError';
feature_names = data1.Properties.VariableNames(2:end)';
[~, sorted_idx] = sort(feature_importance);
fprintf('目标方程：\n');
for i = sorted_idx'
fprintf('%f * %s +\n', feature_importance(i),...](https://linuxcpp.0voice.com/zb_users/upload/2023/05/202305162213383175637.png)
