PM2Ring

""" Julian day number to date conversion
    Proleptic Gregorian and Julian, with Astronomical years
    i.e., 1 AD = year 1, 1 BC = year 0, 2 BC = year -1, etc

    Derived from RG Tantzen (1963), ACM.
    Algorithm 199: conversions between calendar date and Julian day number.

    https://en.wikipedia.org/wiki/Julian_day
    Julian day number 0 assigned to the day starting at noon on
    January 1, 4713 BC, proleptic Julian calendar

thalamus

/* 
 * This document is provided to the public domain under the 
 * terms of the Creative Commons CC0 public domain license
 */

How to boot Arch Linux ARM in QEMU (patched for M1)

Prerequisites:

QEMU - patched for M1 processors - patches: https://github.com/utmapp/qemu

todgru

Setup redis-cli on AWS EC2

SSH into your EC2 instance. Run the following:

$ sudo yum install gcc This may return an "already installed" message. That's OK.

$ wget http://download.redis.io/redis-stable.tar.gz && tar xvzf redis-stable.tar.gz && cd redis-stable && make

See: http://docs.aws.amazon.com/AmazonElastiCache/latest/UserGuide/GettingStarted.ConnectToCacheNode.Redis.html

vibhavp

(defun make-random-bitarray (n)
  "Generate a random list of bits of length N"
  (let ((arr nil)
	(i 0))
    (loop while (not (eq i n)) do
	 (progn (incf i 1) (push (random 2) arr)))
    arr))

(defun make-random-adj-mat (n)
  "Generate a random adjacency matrix (for a digraph) of size n"