1 + 1 = OVER 9000!!!

Exploring the concept of Pair Programming

Transcript

1. PAIR PROGRAMMING BASICS 
 Damir Zekić
 @sidonath
2. 1+1=
3. ŠTA JE PAIR PROGRAMMING?
4. VOŽNJA & NAVIGACIJA
5. class CheckoutsController < ApplicationController def create ActiveRecord::Base.transaction do ! cancel_abandoned_checkouts return unless new_checkout_from_params @checkout.save! ! if params[:email_address_set_membership] && params[:email_address_set_membership][:email_address_set_id].present? @checkout.meta( :email_address_set_join_intention, params[:email_address_set_membership][:email_address_set_id] ) end ! # Track checkout creation mixpanel.track_event('Payment', { source: params[:checkout][:source], user: current_user.id, method: params[:checkout][:service] }) ! mixpanel.track_event('Retailer Link', { source: params[:checkout][:source], providerId: @checkout.ownerships.reduce([]){|pids, o| pids << o.product.provider.id }.uniq, itemId: @checkout.item_ids, embedded: params[:checkout][:embedded], url: request.referer ? request.referer.encode('UTF-8', invalid: :replace, undef: :replace) : nil }) ! payment_service = params[:checkout][:service] current_user.meta(:most_recent_payment_service, payment_service) key = (payment_service + '_payment_service_usage_count').to_sym if current_user.meta(key).nil? current_user.meta(key, 1) else current_user.meta(key, current_user.meta(key) + 1 ) end ! if payment_service == 'PayLater' && @checkout.pay_later_allowed? if @checkout.gift && !@checkout.billing_address respond_to do |format| msg = "Provide the full billing address." format.html do flash[:error] = Notification.new(msg, "You tried to purchase a gift using 'pay later' option, but no billing address was specified." + "<br>Contact us for more info: <strong><a href='mailto:help&#64;example.com'>help&#64;example.com</a></ strong>") redirect_to checkout_path and return end format.json { render json: {message: msg}, status: :unprocessable_entity and return} end end ! @checkout.complete_without_payment! if current_user.existant_ea PurchaseMailer.delay.purchase_confirmation(current_user.existant_ea, @checkout) end ! respond_to_successfully_completed_checkout(@checkout, payment_service) and return end ! collect_mailing = case params[:checkout][:collect_mailing] when 'true' then true when 'false' then false else false end ! allow_guest_checkout = case params[:checkout][:pp_mode] when 'cc' then true when 'account' then false else true end ! invoice_items = nil ! invoice_items = @checkout.ownerships.inject([]) do |a, e| i = e.product_item if i.custom_invoice_items a += i.custom_invoice_items else a << { name: i.product.description, amount: i.price * 100, description: i.description } end a end if invoice_items.map{|x| x[:amount] }.sum != @checkout.amount * 100 invoice_items = nil end ! begin payment_creation_options = { user_id: current_user.id, checkout_id: @checkout.id, amount: @checkout.amount, service: payment_service, collect_mailing: collect_mailing, allow_guest_checkout: allow_guest_checkout } payment_creation_options[:invoice_items] = invoice_items if invoice_items payment_creation_options[:pp_page_style] = params[:checkout][:pp_page_style] if params[:checkout][:pp_page_style] ! payment_creation_options[:amazon_cobranding_url] = params[:checkout][:amazon_cobranding_url] if params[:checkout][:amazon_cobranding_url] ! @payment = Payment.create( payment_creation_options ) rescue ActiveResource::ResourceInvalid, StandardError notify_airbrake($!) flash[:error] = Notification.new(UX::PAYMENTS[:creation_failed], UX::PAYMENTS[:help], false) respond_to do |format| format.html { redirect_to checkout_path and return } format.json { render json: {message: UX::PAYMENTS[:creation_failed]}, status: 422 and return } end else @checkout.update_attributes({ payment_id: @payment.id }, without_protection: true) ! respond_to do |format| format.html { redirect_to( @payment.get(:authorization_url)['value'] ) and return } format.json { render json: { payment_id: @payment.id } and return } end end ! end # ActiveRecord::Base.transaction end end …JER JE PROGRAMIRANJE KOMPLIKOVANO
6. …JER FACEBOOK
7. …JER NELOMLJIVA KONCENTRACIJA
8. …JER ŽELIMO PISATI BOLJI KOD
12. 1. Pronađite partnera 2. Sjedite zajedno za kompjuter 3. Dogovorite se ko od vas dvoje vozi 4. Programirajte 5. Zamijenite uloge 6. Prodiskutujte potencijalne probleme
13. 1. Pronađite partnera 2. Spojite dva ekrana i dvije tasture 3. Dogovorite se oko zadatka koji rješavate 4. Dogovorite se ko od vas dvoje vozi 5. Programirajte 6. Zamijenite uloge 7. Prodiskutujte potencijalne probleme
14. 1. Pronađite partnera 2. Share-ujte ekran i kontrole kompjuterom 3. Dogovorite se ko od vas dvoje vozi 4. Programirajte 5. Zamijenite uloge 6. Prodiskutujte potencijalne probleme
15. HIGH-FIVE FRIENDLY SETUP
17. CODE REVIEWS
18. http://www.pairprogramwith.me/