Webastor - Programming Tips and Tricks

Hi, I would like to submit an urgent question to you! in python, i've often seen data passed to a dword parameter of a function, like this "snd_filename | snd_async". what does the "|" operator do here? It is urgent, Thank you very much for kindly giving me your opinion quickly.

Hello, I would like to ask you a little problem to submit because I can not find the answer elsewhere, has php encapsulation got any disadvantage? i was asked this q in a recent interview and could not think of any possible disadvantage. Thank you for answering me please.