rantler

class Foo
  def meth(a:, b:, c:)
    method(__method__).parameters.map(&:last).each do |var|
      instance_variable_set("@#{var}", binding.local_variable_get(var))
    end
  end
  def inspect
   puts "@a = #{@a}"
   puts "@b = #{@b}"
   puts "@c = #{@c}"

rantler

require 'base64'

class ValidateCsrfTokens
  class << self

    def validate(form_token:, cookie_token:)
      decoded_form_token = Base64::decode64(form_token)
      decoded_cookie_token = Base64::decode64(cookie_token)
      form_token_length = decoded_form_token.bytes.length
      cookie_token_length = decoded_cookie_token.bytes.length

rantler

class ApprovalError < StandardError
  def initialize(response)
    @response = response
    @request = response.request
  end

  def inspect
    "uri: #{@request.uri}, response_body: #{@response.body}"
  end
end

rantler

# Cribbed from https://stackoverflow.com/questions/24438655/ruby-fibonacci-algorithm
def fib_memo(n, memo)
  memo[n] ||= fib_memo(n-1, memo) + fib_memo(n-2, memo)
end

def fib(n)
  raise "fib not defined for negative numbers" if n < 0
  fib_memo(n, [0, 1])
end

rantler

a = "abc\xffdef"

a.force_encoding('UTF-8') # => "abc\xFFdef"

a.encoding.name # => "UTF-8"
# ok

a.valid_encoding? # => false
# wtf?

rantler

class DegreeClock

  HOURS_PER_DAY = 24
  MINUTES_PER_HOUR = 60
  DEGREES_PER_HOUR = 360
  DEGREES_PER_DAY = DEGREES_PER_HOUR * HOURS_PER_DAY
  DEGREES_PER_MINUTE = DEGREES_PER_HOUR / MINUTES_PER_HOUR
  HOURS_PER_HALF_DAY = HOURS_PER_DAY / 2

  class Time

rantler

# https://rpm.newrelic.com/account/131856/agent/3256655/metrics/425412176
# https://rpm.newrelic.com/accounts/131856/plugins?type=6106
# http://note.io/1bjT5FW
[<2013-11-08 23:00:22, 2013-11-08 23:01:22> metric:  count:1 total:7.0,
 <2013-11-08 23:01:21, 2013-11-08 23:02:21> metric:  count:1 total:7.0,
 <2013-11-08 23:02:21, 2013-11-08 23:03:21> metric:  count:1 total:7.0,
 <2013-11-08 23:03:22, 2013-11-08 23:04:22> metric:  count:1 total:7.0,
 <2013-11-08 23:04:22, 2013-11-08 23:05:22> metric:  count:1 total:7.0,
 <2013-11-08 23:05:23, 2013-11-08 23:06:23> metric:  count:1 total:7.0,
 <2013-11-08 23:06:23, 2013-11-08 23:07:23> metric:  count:1 total:7.0,

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@account = Account.find(131856)
@account.set_shard_connection
@agent = Agent.find(3256655)
@metric = Metric.find(425412176)
time_window = TimeWindow.new((Time.now.utc - 1.day).to_i, Time.now.utc.to_i)
@timeslice_data = Timeslice.find_and_aggregate(@agent, time_window, @metric, :aggregate_time => false, :raw_data => true)

rantler

class PluginRater
  def self.rate_plugin_for_user!(rating, plugin, user)
    plugin.update_rating_for_user(rating, user)
    Event::Publish('user_rated_a_plugin', rating, plugin, user)
    Auditor::AuditRatingChange(rating, plugin, user)
  end
end

class Controller
  def rate

rantler

(See also https://gist.github.com/ryansobol/5252653)

Originally published November, 2013

Javascript

How would you toggle the visibility of several controls on the page?

$$('#element_one, #element_two').invoke('toggle');