What to do for Streaming??? : 'axis interface pragma' vs 'pragma for ap_fifo interface and RESOURCE for AXIS'

Hi all,
I need streaming interface with accelerator. I followed one tutorial. There I mentioned through pragma that ap_fifo interface will be used along with AXIS RESOURCE. But now I found that there is one option for axis interface in pragma. I want to know what is the difference between this two procedure. It is very confusing. Can I blindly change "ap_fifo interface + AXIS RESOURCE" to "axis interface"??? Or there is some differences?? Which one is hardware optimized.??????

Depends on the HLS version. In the current tool version, if you are interested in setting up an AXIS interface then the directive to be used in axis.
void example(int A[50], int B[50]) {
//Set the HLS native interface types
#pragma HLS INTERFACE axis port=A
#pragma HLS INTERFACE axis port=B
If you are using hls::stream<> then by default the top level interface is implemented as ap_fifo interface. ap_fifo will not support bi-directional access.

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