havenwood

##
# This refinement uses a binary-splitting algorithm for fairly
# efficient factorial calculation with results cached by default.
#
# Caching dramatically improves performance when portions of the
# factorial calculation are repeated.
class UnaryFactorial < Module
  class NegativeError < StandardError
    def initialize(message = 'Factorials cannot be negative') = super
  end

njsmith

import trio
import trio.testing

# A simple protocol where messages are single bytes b"a", b"b", b"c", etc.,
# and each one is acknowledged by echoing it back uppercased. So send b"a",
# get b"A", etc.

# To make it easier to shut down, message b"z" causes the receiver to exit.

async def receiver(stream):

onlyphantom

Demystifying Docker Volumes for Mac and PC Users

1. Docker runs on a Linux kernel

Docker can be confusing to PC and Windows users because many tutorials on that topic assume you're using a Linux machine.

As a Linux user, you learn that Volumes are stored in a part of the host filesystem managed by Docker, and that is /var/lib/docker/volumes. When you're running Docker on a Windows or Mac OS machine, you will read the same documentation and instructions but feel frustrated as that path don't exist on your system. This simple note is my answer to that.

When you use Docker on a Windows PC, you're typically doing one of these two things:

• Run Linux containers in a full Linux VM (what Docker typically does today)

whophil

# After Ubuntu 16.04, Systemd becomes the default. 
# It is simpler than https://gist.github.com/Doowon/38910829898a6624ce4ed554f082c4dd

[Unit]
Description=Jupyter Notebook

[Service]
Type=simple
PIDFile=/run/jupyter.pid
ExecStart=/home/phil/Enthought/Canopy_64bit/User/bin/jupyter-notebook --config=/home/phil/.jupyter/jupyter_notebook_config.py

danielestevez

1) Create a branch with the tag
	git branch {tagname}-branch {tagname}
	git checkout {tagname}-branch

2) Include the fix manually if it's just a change .... 
	git add .
	git ci -m "Fix included"
    or cherry-pick the commit, whatever is easier
	git cherry-pick  {num_commit}