问题
I had a af::array and need to acess the value in a row, like z(8), e.g. But, when i try to do this, in a loop with a incremental i, the compiler returns
cannot convert from 'af::array::array_proxy' to 'double'
Someone knows how can I acess the value inside the array? Thanks.
回答1:
Take a look at scalar in the arrayfire documentation here.
For your use case, you can access the element like this :
float val = z(8).scalar<float>();
Could you talk about why you need to do this? In many cases, transferring values to the host from the GPU is unnecessary and avoidable.
来源：https://stackoverflow.com/questions/44684155/acessing-a-value-on-an-arrayfire-array