nathanl

# Scopes that make use of the index
def self.within_distance_of(lat:, lng:, meters:)
  where(%{
    ST_DWithin(
      ST_GeographyFromText(
        'SRID=4326;POINT(' || #{table_name}.longitude || ' ' || #{table_name}.latitude || ')'
      ),
      ST_GeographyFromText('SRID=4326;POINT(%f %f)'),
      %d
    )

nathanl

" <cr> should not only clear highlighted search, but flash the current
" cursor location.
:nnoremap <CR> :nohlsearch<CR>:set cul cuc<cr>:sleep 50m<cr>:set nocul nocuc<cr>/<BS>

nathanl

# config/initializers/stupid_t.rb
# Any text that doesn't appear as "localized" isn't localized
module ActionView::Helpers::TranslationHelper
  def t(*args)
    result = I18n.t!(*args)
    if result.respond_to?(:map)
      result.map { |r| "localized" }
    else
      "localized"
    end

nathanl

# Exponential backoff in Ruby
begin
  make_request
rescue RequestError => e
  if retries <= max_retries
    retries += 1
    sleep 2 ** retries
    retry
  else
    raise "Timeout: #{e.message}"

nathanl

def factorial(n)
  (1..n).reduce(:*)
end

SECONDS_PER_STEP = 0.001

def total_seconds(n)
  factorial(n) * SECONDS_PER_STEP
end

nathanl

# This can be run from the voltron directory while the NetSkycanner has a couple of `rake pathfinder` processes running

require 'bundler/setup'
Bundler.require :default, :pathfinder

require 'json'
require 'thump'
require 'mr_sulu_messages'

test = "searching"

nathanl

def p(*args)
  location = caller_locations(1,1)[0]
  location_string = "#{location.path.split('/').last}:#{location.lineno}(#{location.label})"
  super([*args, location_string])
end

nathanl

require 'logger'
l = Logger.new(STDOUT)
l.formatter = proc { |severity, datetime, progname, msg|
  dt = datetime.strftime('%Y-%b-%d@%H:%M:%S:%z')
  "#{[severity,dt,progname,msg].join(' ').squeeze(' ')}\n"
}
l.info "woot" #=> INFO 2014-Feb-11@09:48:32:-0500 woot

nathanl

// A safer console object (https://gist.github.com/nathanl/6368185)
// - Ensures `console.log` doesn't cause errors in browsers with no console
// - Lets you enable/disable console logging (using console.enable = true/false)
// - Supports all console methods documented here: https://developer.mozilla.org/en-US/docs/Web/API/console
//
// Less fancy but lighter weight than this: http://benalman.com/projects/javascript-debug-console-log/
safe_console = {
  enabled: false,
  original_console: (function(){
    // If the browser has no usable one, define a no-op

nathanl

class Person < ActiveRecord::Base

  # This manual SQL query...
  scope :allowed_to_eat_cheese, joins(
    <<-SQL
    INNER JOIN cities ON people.city_id  = cities.id
    INNER JOIN states ON cities.state_id = states.id
    SQL
    ).where('states.allows_cheese_consumption' = 'Yeppers')