kerkerj kerkerj

Originally published in June 2008

When hiring Ruby on Rails programmers, knowing the right questions to ask during an interview was a real challenge for me at first. In 30 minutes or less, it's difficult to get a solid read on a candidate's skill set without looking at code they've previously written. And in the corporate/enterprise world, I often don't have access to their previous work.

To ensure we hired competent ruby developers at my last job, I created a list of 15 ruby questions -- a ruby measuring stick if you will -- to select the cream of the crop that walked through our doors.

What to expect

Candidates will typically give you a range of responses based on their experience and personality. So it's up to you to decide the correctness of their answer.

tmux shortcuts & cheatsheet

start new:

tmux

start new with session name:

tmux new -s myname

	#!/bin/sh
	# Generate test coverage statistics for Go packages.
	#
	# Works around the fact that `go test -coverprofile` currently does not work
	# with multiple packages, see https://code.google.com/p/go/issues/detail?id=6909
	#
	# Usage: script/coverage [--html\|--coveralls]
	#
	# --html Additionally create HTML report and open it in browser
	# --coveralls Push coverage statistics to coveralls.io

	class GrapeRequestLogSubscriber < ActiveSupport::LogSubscriber

	def grape_controller(event)
	request = Rack::Request.new(event.payload).env
	response = Rack::Response.new(event.payload)
	data = extract_request(request)
	data.merge! extract_status(response)
	logger.send(:warning, data.to_json)
	end

	#!/usr/bin/env bash
	# memusg -- Measure memory usage of processes
	# Usage: memusg COMMAND [ARGS]...
	#
	# Author: Jaeho Shin <[email protected]>
	# Created: 2010-08-16
	set -um

	# check input
	[ $# -gt 0 ] \|\| { sed -n '2,/^#$/ s/^# //p' <"$0"; exit 1; }

	# Simple bijective function
	# Basically encodes any integer into a base(n) string,
	# where n is ALPHABET.length.
	# Based on pseudocode from http://stackoverflow.com/questions/742013/how-to-code-a-url-shortener/742047#742047

	ALPHABET =
	"abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789".split(//)
	# make your own alphabet using:
	# (('a'..'z').to_a + ('A'..'Z').to_a + (0..9).to_a).shuffle.join

	// Use Gists to store code you would like to remember later on
	console.log(window); // log the "window" object to the console