I have to admit it sounds a bit weird to "code" a 3d part, but it is really powerful. From a person like me who learned C, it's easy to conceptualize a part as a flexible module you can call in a bigger project, like we usually build a complex program in C.
The OpenSCAD editor allows real-time visualization of what you're doing/coding, so it is not so hard to see where you're going while coding.