Scott Jacobsen scottjacobsen

Server Price Breakdown: DigitalOcean, Amazon AWS LightSail, Vultr, Linode, OVH, Hetzner, Scaleway/Online.net:

$5/mo

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Clojure Destructuring Tutorial and Cheat Sheet

(Related blog post)

Simply put, destructuring in Clojure is a way extract values from a datastructure and bind them to symbols, without having to explicitly traverse the datstructure. It allows for elegant and concise Clojure code.

	#!/bin/bash

	# See https://github.com/codeclimate/test-reporter/issues/226
	# And https://github.com/codeclimate/test-reporter/pull/305

	export CI_NAME="heroku"
	export GIT_COMMITTED_AT="$(date +%s)"

	# Run the ruby test suite
	bundle exec rake

	SELECT table,
	formatReadableSize(sum(bytes)) as size,
	min(min_date) as min_date,
	max(max_date) as max_date
	FROM system.parts
	WHERE active
	GROUP BY table

	# problem: when presenting, I want to obscure
	# my prompt to act like it's at root of file system
	# and be very basic with no git info, etc.

	# solution: this theme lets you set a ENV to the path
	# of your presentation, which will help remove unneeded prompt
	# features while in that path

	# oh-my-zsh theme for presenting demos
	# based off the default rubbyrussell theme


	# :: [event] -> String -> String
	def method_delta_line es, method_name
	es.select {\|e\| e.method_name == method_name }
	.map(&:method_length)
	.each_cons(2)
	.map {\|c,n\| ["^","v","-"][(c <=> n) + 1] }
	.join
	end

	# Hello, and welcome to makefile basics.
	#
	# You will learn why `make` is so great, and why, despite its "weird" syntax,
	# it is actually a highly expressive, efficient, and powerful way to build
	# programs.
	#
	# Once you're done here, go to
	# http://www.gnu.org/software/make/manual/make.html
	# to learn SOOOO much more.

	# OSX for Hackers (Mavericks/Yosemite)
	#
	# Source: https://gist.github.com/brandonb927/3195465

	#!/bin/sh

	# Some things taken from here
	# https://github.com/mathiasbynens/dotfiles/blob/master/.osx

	# Ask for the administrator password upfront

	# A commented nginx configuration file for Ruby on Rails
	#
	# Author: Tommaso Pavese
	# [email protected]
	# http://tommaso.pavese.me
	#
	# License: http://www.wtfpl.net/
	#
	#
	# Tested with:

	-- show running queries (pre 9.2)
	SELECT procpid, age(clock_timestamp(), query_start), usename, current_query
	FROM pg_stat_activity
	WHERE current_query != '<IDLE>' AND current_query NOT ILIKE '%pg_stat_activity%'
	ORDER BY query_start desc;

	-- show running queries (9.2)
	SELECT pid, age(clock_timestamp(), query_start), usename, query
	FROM pg_stat_activity
	WHERE query != '<IDLE>' AND query NOT ILIKE '%pg_stat_activity%'

Scott Jacobsen scottjacobsen

Server Price Breakdown: DigitalOcean, Amazon AWS LightSail, Vultr, Linode, OVH, Hetzner, Scaleway/Online.net:

$5/mo

Clojure Destructuring Tutorial and Cheat Sheet

Vectors and Sequences