jjb

2012-09-27 18:08:53.258 growlnotify[83684:707] Got disconnected: Error Domain=NSPOSIXErrorDomain Code=61 "Connection refused" UserInfo=0x7fb3e2a0f900 {NSLocalizedDescription=Connection refused, NSLocalizedFailureReason=Error in connect() function}
2012-09-27 18:08:53.260 growlnotify[83684:707] <GrowlGNTPRegistrationAttempt: 0x7fb3e2a0f770> failed because Error Domain=NSPOSIXErrorDomain Code=61 "Connection refused" UserInfo=0x7fb3e2a0f900 {NSLocalizedDescription=Connection refused, NSLocalizedFailureReason=Error in connect() function}
2012-09-27 18:08:53.260 growlnotify[83684:707] Failed to register with (null)

jjb

#!/bin/env ruby

require 'rubygems'
require 'pony'

# total memory used
total_memory_used = `free | awk '$1=="Mem:" {print $3 / $2 * 100}'`.to_i

# active memory used
used = `awk '$1=="Active:"{active=$2}$1=="MemTotal:"{total=$2}END{print active/total * 100}' /proc/meminfo`.to_i

jjb

require 'timeout'

Timeout.timeout(rand) do # random number between 0 and 1 (seconds)
  sleep 0.1
  sleep 0.1
  sleep 0.1
  sleep 0.1
  sleep 0.1
  sleep 0.1
  sleep 0.1

jjb

def do_jobs
  begin
    while true
      # do interesting things
    end
  rescue NoMoreDiskSpace
    # tidy things up
  end
end

jjb

require 'thread'

t = Thread.new{
  sleep 0.1
  sleep 0.1
  sleep 0.1
  sleep 0.1
  sleep 0.1
}

jjb

t = Thread.start{
  begin
    puts "starting executing code!"
    sleep 1
    puts "done executing code!" # we don't expect to reach here
  rescue Exception
    puts "rescuing!"            # we don't expect to reach here
  ensure
    puts "ensuring!"            # will we reach here????? (yes)
  end

jjb

def generate_continue_object(*args)

  args.each{|a| puts a.inspect}

  yield if block_given?

  continue_object = Object.new
  def continue_object.next_block
    if block_given?
      yield

jjb

self.class._create_callbacks.select { |callback| callback.kind.eql?(:after) }.collect(&:filter)

jjb

def subject(throws, catches)
  $inner_succeeded=nil
  $raised_in_inner=nil
  $caught_in_inner=nil

  $raised_in_outer=nil
  $not_raised_in_outer=nil
  begin
    Timeout.timeout(0.1, throws){
      begin

jjb

require 'timeout'

def process_foos(error_to_rescue)
  begin
    # -> process Foos
    # -> if we run out of Foos, raise
    sleep 2
  rescue error_to_rescue
    # -> email the manager that we ran out of Foos
    puts <<-MESSAGE