Passing by value means we pass a copy of the value.; Passing by reference means we pass the real reference to the variable in memory.; Java object references are passed by value. All object ...

In blueprint i have a variable of 'array of color array' type. In blueprint graph, i set new values in it and then call python script for further process. When i access the variable from the python ...

Now that I have created a system environment variable in Windows, plus restarted my computer, it works. Do anyone know what the opencv Doc is missing and why setting environment variable inside python ...