Edward Anderson nilbus

Summary

Feel free to use Avdi-style constants as methods when not calling the method repeatedly in a short period of time. Otherwise, consider the performance trade-off.

GC for this example took about 1.8ms per 1000 calls.
For significant numbers of iterations, using constants sped this example by 10x in reduced GC overhead
Each call in this test required GC of 10 short strings and 1 Hash.

Coding challenge or existing code?

The coding challenge is optional if you already have some code that you're proud of and can share with us.

Existing code

If you have existing code, please follow the following guidelines:

	npm ERR! argv "/usr/bin/nodejs" "/usr/bin/npm" "install"
	npm ERR! node v4.8.4
	npm ERR! npm v2.15.11
	npm ERR! path ../coffee-script/bin/coffee
	npm ERR! code EINVAL
	npm ERR! errno -22
	npm ERR! syscall symlink

	npm ERR! EINVAL: invalid argument, symlink '../coffee-script/bin/coffee' -> '/exercism/node_modules/lineman/node_modules/.bin/coffee'

	require 'benchmark'

	def fetch_with_block(arg)
	arg.fetch(:sym) { "str" }
	end

	def fetch_with_str(arg)
	arg.fetch(:sym, "str")
	end

	namespace :generate do
	desc "generate N comments, typically for performance testing"
	task comments: [:connection] do
	n = ENV['N'].to_i
	abort 'specify the number of comments to generate: N=<count>' if n.zero?
	puts "Generating #{n} comments"
	ActiveRecord::Base.connection.execute <<~SQL
	INSERT INTO comments (submission_id, user_id, body, html_body, created_at, updated_at) (
	SELECT
	submission_id,

	#!/bin/sh
	# Used with https://github.com/nilbus/docker-hook to deploy $IMAGE
	# when triggered by a Docker Hub webhook.

	IMAGE='nilbus/nilbus.com'
	docker pull $IMAGE
	docker service update http --image $IMAGE

	Please note that these warnings are just used to help the Homebrew maintainers
	with debugging if you file an issue. If everything you use Homebrew for is
	working fine: please don't worry and just ignore them. Thanks!

	Warning: Unbrewed dylibs were found in /usr/local/lib.
	If you didn't put them there on purpose they could cause problems when
	building Homebrew formulae, and may need to be deleted.

	Unexpected dylibs:
	/usr/local/lib/libcspec.0.dylib

	User.new.job # => unsaved Job
	User.create!.job # => saved Job
	User.last.job # => existing Job

	def update
	find_user
	if @user.update_attributes(user_params)
	respond_to do \|format\|
	format.html {
	redirect_to admin_user_path(@user)
	flash[:notice] = 'User updated'
	}

	format.js {