Aleksey Shein conf

Constant lookup in Ruby can happen lexically or through the ancestry tree of the receiver(a class or module). You can identify which lookup rules are being applied by the context you're in or by the syntax being used to define a class or module.

A class body that is defined as class A::B::C; …; end will lookup constants through the ancestry tree when a constant is evaluated in its class body. Anytime you see A::B::C being used as syntax to define a class or lookup the value of a constant the ancestry tree is being used for the lookup.

TLDR: I now add the following snippet to all my Dockerfiles:

# If host is running squid-deb-proxy on port 8000, populate /etc/apt/apt.conf.d/30proxy
# By default, squid-deb-proxy 403s unknown sources, so apt shouldn't proxy ppa.launchpad.net
RUN route -n | awk '/^0.0.0.0/ {print $2}' > /tmp/host_ip.txt
RUN echo "HEAD /" | nc `cat /tmp/host_ip.txt` 8000 | grep squid-deb-proxy \
  && (echo "Acquire::http::Proxy \"http://$(cat /tmp/host_ip.txt):8000\";" > /etc/apt/apt.conf.d/30proxy) \
  && (echo "Acquire::http::Proxy::ppa.launchpad.net DIRECT;" >> /etc/apt/apt.conf.d/30proxy) \
  || echo "No squid-deb-proxy detected on docker host"

Description

PLEASE SCROLL DOWN AND READ THE COMMENTS FOR A MORE UP TO DATE WAY (AND EASIER) TO DO THIS
When using Homebrew (http://brew.sh) and searching formulas or pull requests you may get the dreaded error message: Github API Rate limit exceeded

Let's fix that! (yeah!)

Short version

PLEASE SCROLL DOWN AND READ THE COMMENTS FOR A MORE UP TO DATE WAY (AND EASIER) TO DO THIS

Introduction

jenkins-stats.py is used to generate statics for jenkins server, so far it display the plugin's usage in each job, see related stackoverflow question:how can I know whether the plugin is used by any jobs in jenkins

Installation

python-requests module is required

	-- Found at:
	-- http://www.if-not-true-then-false.com/2009/postgresql-psql-psqlrc-tips-and-tricks/
	-- http://opensourcedbms.com/dbms/psqlrc-psql-startup-file-for-postgres/

	\set QUIET ON

	\pset pager always

	\pset null 'NULL'

	class Dog
	attr_writer :name

	def initialize(name)
	@name = name
	end

	def bark
	puts "patrick"
	end

	\n
	time_namelookup: %{time_namelookup}\n
	time_connect: %{time_connect}\n
	time_appconnect: %{time_appconnect}\n
	time_pretransfer: %{time_pretransfer}\n
	time_redirect: %{time_redirect}\n
	time_starttransfer: %{time_starttransfer}\n
	----------\n
	time_total: %{time_total}\n
	\n

	import static groovy.json.JsonOutput.*

	def config = ['test': 'lalala']

	println prettyPrint(toJson(config))