cpkenn09y’s gists

cpkenn09y / playing_with_blocks.rb

Created July 31, 2019 22:04

	# https://mixandgo.com/learn/mastering-ruby-blocks-in-less-than-5-minutes

	def my_method
	puts "reached the top"
	yield("John", 2)
	puts "reached the bottom"
	end


	my_method { puts "reached yield" }

cpkenn09y / ruby_hashes_explained.rb

Last active May 30, 2018 17:51

Ruby Hashes Explained

	<<-OLIVER_QUESTION_20180530
	Oliver's Question: what does "validate" mean here?
	self.save(validate: false)
	I'm trying to understand what var: means (specifically, the colon symbol)
	Is this specifying the name of the parameter that the value is to be matched up with?
	OLIVER_QUESTION_20180530


	# -- LESSON: In Ruby, a hash can use Strings (eg. "almond", "twix") or symbols (eg. :almond, :peanut) as keys. -- #

cpkenn09y / gist:915571e22e90b07669a33aeb2ad1a7d3

Created November 9, 2017 00:13

Simple Benchmark

	def pretty_format_from_seconds(total_seconds)
	milliseconds = total_seconds % 1 * 1000
	seconds = total_seconds % 60
	minutes = (total_seconds / 60) % 60
	hours = total_seconds / (60 * 60)

	return format("%02d:%02d:%02d:%02d", hours, minutes, seconds, milliseconds) #=> "01:00:00"
	end

cpkenn09y / gist:b91266a9df7a9a382795b305cf91a46d

Created February 17, 2017 22:40

where_by_ordered_ids

	# Use ActiveRecord to find records based on an array of ids
	# works with postgresql

	scope :where_by_ordered_ids, ->(ids) {
	order = sanitize_sql_array(
	["position((',' \|\| id::text \|\| ',') in ?)", ids.join(',') + ',']
	)
	where(:id => ids).order(order)
	}

cpkenn09y / request_helpers.rb

Last active January 26, 2017 21:41

	# spec/helpers/support/request_helpers.rb

	# Add the following require statement to your rails_helper.rb
	# require Rails.root.join("spec/support/request_helpers.rb")

	module Requests

	module JsonHelpers

	def json

cpkenn09y / sample rspec expectations and stubs

Last active October 8, 2019 22:21

	## IMPORTANT -> The expectation must come before the invocation, so that it can catch the invocation when it happens

	# Able to stub an instance's method. Will return whatever is in the block. The instance's method would have to be invoked in the RSpec.
	@person.stub(:get_relevant_experts) { @collection_of_possibilities }

	# Expectation of an instance that is available in the testing context to receive a particular method, choose return value
	expect(@person).to receive(:get_relevant_experts).with("Medical").and_return(@collection_of_possibilities)

	# Expectation of an instance to receive a method and return a result
	expect_any_instance_of(Classification).to receive(:valid_matches).and_return(@collection_of_possibilities)

cpkenn09y / excel_file_opener.rb

Created January 6, 2016 00:59

Simple implementation of opening a excel file

	@xlsx = Roo::Spreadsheet.open(params[:file])
	@header = @xlsx.sheet(0).row(1) # ["name", "ssn"]
	@body = []
	@xlsx.sheet(0).each_with_index(:name => 'name', :ssn => 'ssn') do \|hash, index\|
	if (index == 0)
	else
	@body << hash
	end
	end

cpkenn09y / zoo.js

Last active December 26, 2015 02:09 — forked from dbc-challenges/zoo.js

	<html>
	<body>
	<script>


	//------------------------------------------------------------------------------------------------------------------
	// YOUR CODE: Create your Zoo "object literal" and Animal "constructor" and "prototypes" here.
	//------------------------------------------------------------------------------------------------------------------
	function Animal(species, numOfLegs) {
	this.name = species;

cpkenn09y / zoo.js

Created October 20, 2013 21:35 — forked from dbc-challenges/zoo.js

	//------------------------------------------------------------------------------------------------------------------
	// YOUR CODE: Create your Zoo "object literal" and Animal "constructor" and "prototypes" here.
	//------------------------------------------------------------------------------------------------------------------



	//------------------------------------------------------------------------------------------------------------------
	// DRIVER CODE: Do NOT change anything below this point. Your task is to implement code above to make this work.
	//------------------------------------------------------------------------------------------------------------------

cpkenn09y / bubble_sort.rb

Created September 22, 2013 01:02

Bubble Sorts!! Able to see it unfold in the terminal :)

	def bubble(array)
	incrementer = 0
	until incrementer == array.length - 1
	array.each_with_index do \|e,i\|
	p array
	unless array[i+1] == nil
	if array[i] > array[i+1]
	array[i] = array[i+1]
	array[i+1] = e
	end

Kenneth cpkenn09y