joshpencheon

# Added to support Oracle on Rails 6.
# See: https://github.com/rsim/oracle-enhanced/issues/2023

original = ActiveRecord::Relation.instance_method(:delete_all).source

unless Digest::MD5.hexdigest(original) == '89a3e7c95873d278263c3d288a6cc242'
  raise 'Please re-verify oracle_delete_all_shim.rb - method appears to have changed!'
end

module ActiveRecord

joshpencheon

require 'active_support/all'
require 'parquet' # with CentOS7 dependencies as per https://arrow.apache.org/install/

data = {
  'a_string' => ['hello world'],
  'an_int'   => [1],
  'a_float'  => [1.23],
  'a_date'   => [Date.today],
  'a_time'   => [Time.now.change(usec: 0)] # there's a precision limit...
 }

joshpencheon

FROM rocker/shiny:4.0.3

ENV RENV_VERSION 0.12.5-2

RUN \
    # Ensure shiny-server is run as the shiny user:
    sed -i 's/exec/exec s6-setuidgid shiny/g' /etc/services.d/shiny-server/run && \
    # Remove all the examples:
    rm -r /srv/shiny-server && \
    # Install Renv:

joshpencheon

Background

The state_machines gem allows you to conditionally define methods based on particular states (i.e. values of an attribute):

class Vehicle
  state_machine :alarm_state do
    state :active do
      def disable_alarm!
      end

joshpencheon

class Counter
  attr_reader :thing

  def initialize(thing)
    @thing = thing
  end

  # The `number` argument's default is an expression that
  # the will be evaluated in the context of the instance.
  def print(number: thing.length)