af_index_t

The struct af_index_t is not yet present in the ArrayFire wrapper. The use of C-style unions has confused our efforts to add this. Right now we are exploring shucking data back and forth between the CPU and GPU to emulate this functionality but this not as fast as using methods/structs which keep data on the GPU.

該 issue 沒有指定檔案、測試或進入點。首先找出 ArrayFire wrapper 中現有的索引相關資料表示方式，並檢視 C 風格 union 的處理方式。完成的標準是在避免 issue 中所述 CPU/GPU 資料傳輸的情況下，將 af_index_t 加入 wrapper。

由索引模型根據 Issue 內容生成。