Method func

tools/train/source/demo/dataLoaderTest.cpp:32–36

this function is an example to use the lambda transform here we use lambda transform to normalize data from 0~255 to 0~1

    // this function is an example to use the lambda transform
    // here we use lambda transform to normalize data from 0~255 to 0~1
    static Example func(Example example) {
        // an easier way to do this
        auto cast = _Cast(example.first[0], halide_type_of<float>());
        return {{_Multiply(cast, _Const(1.0f / 255.0f)), example.first[1]}, {example.second}};
    }

    virtual int run(int argc, const char* argv[]) override {
        if (argc != 2) {