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Full Discussion: One liners, quick rant...
The Lounge What is on Your Mind? One liners, quick rant... Post 302977557 by wisecracker on Tuesday 19th of July 2016 05:12:55 PM
Old 07-19-2016
Hi Neo...
Quote:
Even the best written code can be hard to understand after we have not touched it for a month or two, let alone a year or more.
Yup, I often do a search for something and come across an upload I have written and totally forgotten about. I read it and think did I actaully write that?
Quote:
So, I learned the hard way many years ago not to write "fancy one liners" and write well documented code and scripts.
Going slightly off topic here with the second quote I was on a Python ML, (they were so obnoxious that I have long since left), and the big guns on there said there was no need to add comments as it was easy to work out what a python script does. I gave them this challenge:-
(Before reading the answer I wonder if the Python experts on here can work out what it does?)
Code:
# SomeSound.py

audio=file('/dev/dsp', 'wb')
def main():
	for a in range(0,25,1):
		for b in range(15,112,1):
			for c in range(0,1,1):
				audio.write(chr(127+b)+chr(127+b)+chr(127+b)+chr(127+b)+chr(127-b)+chr(127-b)+chr(127-b)+chr(127-b))
		for b in range(112,15,-1):
			for c in range(0,1,1):
				audio.write(chr(127+b)+chr(127+b)+chr(127+b)+chr(127+b)+chr(127-b)+chr(127-b)+chr(127-b)+chr(127-b))
main()
audio.close()

The solution is here:-
Amplitude Modulation - Tremolo, Was:- An Audio/Sound Snippet For Linux... ;o) << Python recipes << ActiveState Code
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roarvio(7)						System Manager's Manual: RoarAuido						roarvio(7)

NAME
libroar - RoarAudio sound library roarvio - RoarAudio virtual IO layer SYNOPSIS
#include <roaraudio.h> struct roar_vio_calls; DESCRIPTION
The RoarAudio VIO interface is RoarAudio's IO abstraction layer. It provides basic IO functions such as read and write independing on the underlaying IO. For Example can you open a plain or a gziped file via the VIO layer. After a successful open both objects behave the same, libroar takes care about the compression in the gzip case. TUTORIALS
Tutorials can be found in roartutvio(7). IMPORTANT FUNCTIONS
There are several important functions. This is a small list of the most important ones. Opening roar_vio_open_file(3), roar_vio_open_fh(3), roar_vio_open_stdio(3), roar_vio_open_dstr(3), roar_vio_open_proto(3). While there are a lot functions important for opening files the most important one is roar_vio_open_dstr(3). It opens a stream based on URLs that can point to local files or files on remote machines. It also can handle compression and encryption. Closing roar_vio_close(3), roar_vio_shutdown(3) Reading and writing roar_vio_read(3), roar_vio_write(3) Seeking and positioning roar_vio_lseek(3) Non-Blocking and Asyncron IO roar_vio_nonblock(3), roar_vio_sync(3), roar_vio_select(3) Networking and Sockets roar_vio_accept(3) String handling roar_vio_printf(3) BUGS
A lot... SEE ALSO
roar-config(1), roartypes(1), roartutvio(7), RoarAudio(7). RoarAudio May 2011 roarvio(7)
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