toPythonBuffer

slice Slice!(T*, N, kind): input ndslice
view Py_buffer: output Py_buffer. Py_buffer.internal is initialized with null value, Py_buffer.obj is not initialized. Other Py_buffer fields are initialized according to the flags and slice.
flags int: requester flags
structureBuffer Structure!N: Single chunk of memory with the same alignment and size as Structure. The buffer is used to store shape and strides for the view.

Return Value

Type: PythonBufferErrorCode

one of the cannot_create_* PythonBufferErrorCode on failure and success otherwise.

Examples

import mir.ndslice.slice : Slice, Structure, Universal, Contiguous, SliceKind;
Py_buffer bar(SliceKind kind)(Slice!(double*, 2, kind) slice)
{
    import core.stdc.stdlib;
    enum N = 2;

    auto structurePtr = cast(Structure!N*) Structure!N.sizeof.malloc;
    if (!structurePtr)
        assert(0);
    Py_buffer view;

    if (auto error = slice.toPythonBuffer(view, PyBuf_records_ro, *structurePtr))
    {
        view = view.init; // null buffer
        structurePtr.free;
    }
    else
    {
        assert(cast(sizediff_t*)&structurePtr.lengths == view.shape);
        assert(cast(sizediff_t*)&structurePtr.strides == view.strides);
    }

    return view;
}

alias barUni = bar!Universal;
alias barCon = bar!Contiguous;

toPythonBuffer

Parameters

Return Value

Examples

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