wvanbergen

# colors for ls, etc.
parse_git_branch() {
  git branch 2> /dev/null | sed -e '/^[^*]/d' -e 's/* \(.*\)/ \[\1\]/'
}

if [[ ${EUID} == 0 ]] ; then
    PS1='\[\033[01;31m\]\u@\h \[\033[01;34m\]\w\[\033[01;35m\]$(parse_git_branch)\[\033[01;34m\] \$ \[\033[00m\]'
else
    PS1='\[\033[01;37m\]\w\[\033[00;35m\]$(parse_git_branch)\[\033[00m\] \$ '
fi

wvanbergen

class ParseTree
  
  # Evaluates a static part of the tree that ParseTree.translate returns.
  # You can pas a block that will be used to get a value that is not static.
  # A simple example:
  #
  #   >> code = '{ :array => ["str", 123, 4.5], :dynamic => method_call }'
  #   >> tree = ParseTree.translate(code)
  #   => [:hash, [:lit, :array], [:array, [:str, "str"], [:lit, 123], [:lit, 4.5]], 
  #              [:lit, :dynamic], [:vcall, :method_call]]

wvanbergen

  module Swearing
    SWEAR_WORDS = ['dammit', 'fuck', 'son of a bitch', 'motherfucker', 'oh no', 'prick']
    SWEAR_VOICE = 'Alex'
  
    def self.swear!
      `say -v #{SWEAR_VOICE} #{SWEAR_WORDS[rand(SWEAR_WORDS.length)]} &`
    end
  end

  class Test::Unit::Error

wvanbergen

---------------------------------------------
ChunkyPNG (0.8.0) decoding benchmark (n=50)
---------------------------------------------

Rehearsal ---------------------------------------------------------
From PNG stream        16.050000   0.110000  16.160000 ( 16.747523)
From RGBA pixelstream   0.090000   0.030000   0.120000 (  0.122060)
From RGB pixelstream    0.860000   0.030000   0.890000 (  0.901062)
----------------------------------------------- total: 17.170000sec

wvanbergen

require 'rubygems'
require 'chunky_png'

# get the data
data = StringIO.new(File.read('filename.bmp'))

bmp_file_header = data.read(14).unpack('a2VxxV')
bmp_info_header = data.read(40).unpack('V3v2V6')

raise "Not a BMP file"                  unless bmp_file_header[0] == "BM"

wvanbergen

#!/usr/bin/env ruby

# Converts an InnoDB database that uses a shared InnoDB tablespace file (e.g. ibdata1) to use
# a separate file per table.
#
# - First change your my.cnf file to use separate files by adding "innodb_file_per_table" to 
#   the [mysqld] section. (This is safe: MySQL will revert to the giant file if it cannot find
#   the per table file.)
# - Restart the MySQL server
# - cd to the directory of your database (cd /opt/mysql/data/mydb)

wvanbergen

# settings
@bucket_count = 1000      # Must be integer > 0
@min_value    = 10 ** -4  # Must be > 0.0
@max_value    = 10 ** +2  # Must be > @min_value

# precalculate some stuff
@min_value_log = Math.log(@min_value)
@max_value_log = Math.log(@max_value)
@log_delta     = @max_value_log - @min_value_log
@bucket_size   = @log_delta / @bucket_count.to_f

wvanbergen

~ $ request-log-analyzer production.log   # Analyze production.log
      --format custom_file_format.rb      # Use custom file format
      --reject account_type free          # Ignore requests from free accounts
      --select locale en-US               # Only look at en-US locale requests
      --output HTML --file report.html    # Generate an HTML report as report.html

wvanbergen

---------------------------------------------
ChunkyPNG (0.10.0) encoding benchmark (n=10)
---------------------------------------------

Autodetect (indexed)   0.860000   0.000000   0.860000 (  0.856220)
:no_compression        0.490000   0.000000   0.490000 (  0.488724)
:fast_rgba             0.140000   0.000000   0.140000 (  0.143066)
:fast_rgb              0.140000   0.000000   0.140000 (  0.143170)
:good_compression      0.470000   0.010000   0.480000 (  0.476883)
:best_compression      1.880000   0.000000   1.880000 (  1.877189)

wvanbergen

---------------------------------------------
ChunkyPNG (0.10.2) decoding benchmark (n=20)
---------------------------------------------

                          ChunkyPNG        OilyPNG
PNG - no filtering      (  1.056832)   (  0.078345)
PNG - UP filtering      (  3.327986)   (  0.078387)
PNG - PAETH filtering   (  7.499367)   (  0.089143)
From RGBA pixelstream   (  0.032571)   (  0.035790)