IslamAzab

#!/usr/bin/env ruby

# List all keys stored in memcache. 
# Credit to Graham King at http://www.darkcoding.net/software/memcached-list-all-keys/ for the original article on how to get the data from memcache in the first place.

require 'net/telnet'

headings = %w(id expires bytes cache_key)
rows = []

IslamAzab

def html_truncate(input, num_words = 15, truncate_string = "...")
	doc = Nokogiri::HTML(input)

	current = doc.children.first
	count = 0

	while true
		# we found a text node
		if current.is_a?(Nokogiri::XML::Text)
			count += current.text.split.length

IslamAzab

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.

IslamAzab

# Make gems available
require 'rubygems'

begin
  require "ap"
  alias pp ap
rescue LoadError
  puts "Please install the 'awesome_print' gem."
end

IslamAzab

  def self.reindex!
    model_name      = self.name.to_s
    total           = self.count
    indexed         = 0.to_f
    progress        = 0.to_f
    row_length      = 100.to_f
    log_level       = Sunspot::Rails::LogSubscriber.logger.level
    time_start      = Time.now
    each_second     = Time.now
    per_second      = 0

IslamAzab

I'm hunting for the best solution on how to handle keeping large sets of DB records "sorted" in a performant manner.

Problem Description

Most of us have work on projects at some point where we have needed to have ordered lists of objects. Whether it be a to-do list sorted by priority, or a list of documents that a user can sort in whatever order they want.

A traditional approach for this on a Rails project is to use something like the acts_as_list gem, or something similar. These systems typically add some sort of "postion" or "sort order" column to each record, which is then used when querying out the records in a traditional order by position SQL query.

This approach seems to work fine for smaller datasets, but can be hard to manage on large data sets with hundreds (or thousands) of records needing to be sorted. Changing the sort position of even a single object will require updating every single record in the database that is in the same sort group. This requires potentially thousands of wri

IslamAzab

# http://guides.rubygems.org/command-reference/#gem-environment
--- 
gem: --no-document --verbose --backtrace
update_sources: true
backtrace: true

IslamAzab

#!/bin/bash

echo -e "\nbenchmark.sh -n<number of requests> -c<number of concurrency> <URL1> <URL2> ..."

echo -e "\nEx: benchmark.sh -n100 -c10 http://www.google.com/ http://www.bing.com/ \n"

## Gnuplot settings
echo "set terminal jpeg
set output 'benchmark_${1}_${2}.jpeg'
set title 'Benchmark: ${1} ${2}'

IslamAzab

Using better_errors on Ubuntu with SublimeText 3

After I installed the fantastic better_errors gem, I was disappointed to notice that linking to your text editor doesn't work correctly on Ubuntu (at least, it didn't for me). Here's how I fixed it.

First, create a new desktop entry:

# /usr/share/applications/subl-urlhandler.desktop

IslamAzab

BEGIN {

  require 'net/http'
  
  Net::HTTP.module_eval do
    alias_method '__initialize__', 'initialize'
    
    def initialize(*args,&block)
      __initialize__(*args, &block)