patio11

#The task is replacing the port number in the URL string

//in golang
import "fmt"
import "strings"

func main() {
        url := "http://localhost:8080/foo/bar"
        fmt.Println(strings.Replace(url, "8080", "8181", -1))
}

patio11

#In Golang

package main

import (
	"fmt"
	"regexp"
)

func main() {

patio11

cd /tmp

curl -o git-2.2.1.tar.gz "https://www.kernel.org/pub/software/scm/git/git-2.2.1.tar.gz"
curl -o git-2.2.1.tar.sign "https://www.kernel.org/pub/software/scm/git/git-2.2.1.tar.sign"

# if you want to verify the tar signature
gpg --keyserver hkp://keys.gnupg.net --recv-keys 96AFE6CB
gunzip git-2.2.1.tar.gz
gpg --verify git-2.2.1.tar.sign

patio11

Notes

This is the latest version of an email which I send periodically, offering customers the opportunity to pre-pay for SaaS in return for a discount. The benefits to the SaaS company are better cash flow and reduced churn rate. The benefits to the customer are, well, in the email. This genre of email has produced hundreds of thousands of dollars in pre-pays for some companies I work with, and it rarely requires any more work than this example.

I've put $79 is as a placeholder for the cost of the user's plan. We calculate that for each account, naturally, along with the billing contact's name.

Subject: Save $79 on Appointment Reminder (and get a tax write-off) Formatting: 100% plain text. Gmail automatically links up the central link. From: Patrick McKenzie (Appointment Reminder) patrick@appointmentreminder.org

patio11

#This Rake task fires every 5 minutes, checking for a particular symptom which signals a critical problem.
#If it finds it, it calls Patrick's cell phone.
#This could probably be done with PagerDuty or similar, but since I already had a Twilio account...

desc "Emails sysadmin if reminders are not going out"
  task :check_for_emergency => :environment do
    begin
      had_emergency = Reminder.check_for_emergency!  #Application code checks for a symptom of a critical problem.  
      if (had_emergency)
        twimlet_url = "http://twimlets.com/message?Message%5B0%5D=Appointment%20reminder%20reminders%20in%20processing%20or%20scheduled.%20Appointment%20reminder%20reminders%20in%20processing%20or%20scheduled.%20Appointment%20reminder%20reminders%20in%20processing%20or%20scheduled."

patio11

require 'rubygems'
require 'httparty'
require 'fileutils'
require 'json'

USERNAME = ARGV[0] || "patio11"
MAX_TO_FETCH = ARGV[1]

puts "Username: #{USERNAME} max to fetch: #{MAX_TO_FETCH || "all"}"

patio11

List<Student> studentsWhoHaveNotTakenAtLeastOneTest() {
  List<Student> allStudents = this.getStudents().clone(); /* shallow copy to avoid mutation */
  Iterator<Student> studentIt = allStudents.iterator();

  /* select down to students missing at least one test */
  List<Student> studentsMissingAtLeastOneTest = new ArrayList<Student>();

patio11

$MY_PHONE_NUMBERS = []  #Fill this out!

if RAILS_ENV != "production"
  require 'twilio'
  Twilio::Call.class_eval do
    alias_method :old_make, :make

    def make(caller, callee, url, options = {})
      unless $MY_PHONE_NUMBERS.map {|num| num.gsub(/[^0-9+]/, "")}.include? callee.gsub(/[^0-9+]/, "")
        raise "Trying to call a number which you do not own.  (Safety measure for non-production environments.)"

patio11

#Hiya guys,
#I'm Patrick McKenzie (patio11 on HN) and I'm doing this just out of joy of programming puzzles.
#Not really looking for a job at the moment.
#
#I've taken some liberty with standard Ruby programming conventions to make this one file without
#dependencies, for the ease of you actually running it.  It is the result of a very hack-in-progress
#sort of workflow.  A git repo showing my work in stages might be more interesting but, well,
#hard to submit that into the form.

patio11

#This code is MIT licensed.

module ActionView
  module Helpers
    module AssetTagHelper
      require 'jsminlib'  #Google it.  Paste into RAILS_ROOT/libs.  Note: not MIT license (has a "This code should be used for good, not evil" rider -- ask your lawyers if they care).

      def compress_css(source)
        source.gsub!(/\s+/, " ")           # collapse space
        source.gsub!(/\/\*(.*?)\*\/ /, "") # remove comments