rjw57

# This Dockefile demonstrates how to install upstream pypy3 on a bare Debian 10
# box from scratch.
#
# To test:
# docker run --rm rjw57/pypy3 \
#       pypy3 -c 'import numpy as np; M=np.array(range(16)).reshape((4,-1)); Q, R = np.linalg.qr(M); [print(x) for x in (M, Q, R, np.dot(Q,R))]'
FROM debian:10

# Install any system-wide dependencies we need including essential packages
# required to compile C-based Python modules.

rjw57

#!/usr/bin/env python3
#
# THIS SCRIPT REQUIRES PYTHON 3
#
# Install requirements via:
#   pip3 install docopt pillow reportlab
#
# Dedicated to the public domain where possible.
# See: https://creativecommons.org/publicdomain/zero/1.0/
"""

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/* CGSPrivate.h -- Header file for undocumented CoreGraphics stuff. */

/* This file is a relicensed portion of DesktopManager and was originally released under
 * the terms of the GNU General Public Licence. Original licence text follows the new terms.
 * The contents of this file has been re-released by the original author under the following terms:
 *
 * Copyright (C) 2003, 2004, 2013 Richard J Wareham <richwareham@users.sourceforge.net>
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy of this
 * software and associated documentation files (the "Software"), to deal in the Software

rjw57

/* extractall.c - an example of extracting all files from a zip file in C. */

/* This file should be considered an example, and *not* an exemplar, on how to
 * use libzip to extract an archive. */

/* Note: this file goto which is famously considered harmful. We use it only to
 * provide poor-man's state cleanup on error and, in this example, it is safe.
 * There are other ways to do this which you should consider in your
 * application. We use it here because our program is entirely contained within
 * one function and the amount of state we're manipulating is small. YMMV. */

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rjw57

# coding=utf8
"""
A plugin which contains a custom Ansible filter named "friendly_hostname"
which takes a string and generates a deterministic human-readable hostname
with a low chance of collision.

The generated hostname has around 24 bits of entropy which is probably OK up to
a few hundred hosts. See: https://en.wikipedia.org/wiki/Birthday_attack

This module may be run via "python -m friendly_hostname" to test the generator.

rjw57

Compiling OpenCV 3 with Python bindings and pyenv

Dependencies

Luckily Ubuntu has support for getting the build dependencies for a package directly via apt-get:

sudo apt-get build-dep opencv

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rjw57

rjw57

// Inputs:
// D4 (T0)    - Char clock

// Outputs
// D3 (OC2B)  - VSYNC
// D5 (OC0B)  - HSYNC
// D10 (OC1B) - Visible
//
// All outputs should be synchronised to the rising edge of char clock