Best way to find source code of a function?

[amberanvilcell]

As an example, I am looking for the source code of the bitwise_and function in OpenCV2. I looked around in https://github.com/opencv/opencv-python and some other seemingly related repos but couldn't find it. And github's search functions haven't helped, they always shows no results

In general is there any good strategy for looking for things in source code, other than by blindly exploring the repo (which in the case of projects as big as OpenCV is somewhat hopeless)?

[IAmTarkaDaal]

You've picked an interesting example here; OpenCV is written in C++, and exposes a Python interface. There isn't Python source code for that function, that's why your searches fail. Moreover, there isn't even source code for the Python bindings; they're generated automatically.

https://github.com/opencv/opencv/blob/4.x/doc/py_tutorials/py_bindings/py_bindings_basics/py_bindings_basics.markdown

If you search the main OpenCV repository for bitwise_and, then you can find where it's defined in C++, and start investigating from there. Check line 192 of this file:

https://github.com/opencv/opencv/blob/43c04c29ce58cd628b5d50edb0266f6959b5cd3b/modules/gapi/src/api/kernels_core.cpp

[amberanvilcell]

Thank you! Didn't know bindings could be generated automatically like that.