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6 changes: 6 additions & 0 deletions examples/mnist-learn/dataset.cpp
Original file line number Diff line number Diff line change
Expand Up @@ -28,6 +28,12 @@

Dataset process_dataset(ModelDescription const& model_desc)
{
// Check if files exist.
if (!std::filesystem::exists(model_desc.images_file_path_))
throw std::runtime_error("Provided images file does not exists.");
else if (!std::filesystem::exists(model_desc.labels_file_path_))
throw std::runtime_error("Provided labels file does not exists.");

// Create streams for images and labels.
std::ifstream images_stream(model_desc.images_file_path_, std::ios::binary);
std::ifstream labels_stream(model_desc.labels_file_path_, std::ios::in);
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