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okay so i'm adam and i want to remind


android that five minutes of lightning


talk our sacred so we can hate me for


the next year i'm a ruby developer that


for two years


works mostly in alex here so i wanted to


tell you something about it never mind


so in the lecture we have if-else this


is cool we also have something like


ternary operators so we can write in


line if al says we have al sleep oh


sorry


we do not have else ifs but this is like


if-else are some things that Millennials


only want we don't really need it oh


that's better


so you know why do you need if L see if


if you can write something like this


it's we also have switch cases we've


default condition as true so if you


don't have default condition it will


just fail because in the legs here I


don't know if you heard you want to fail


very very quickly and the equal sign is


not really an assignment operator


even if it quacks like a duck it's


really a match operator so you can see


that it it can match two four four two


three in this case but again will fail


if you try to match it with anything


else and you can see that you have maps


which in Ruby you call hashes and you


can access some attribute from this map


but you also can pattern match it you


have arrays not really you don't have


arrays because you have lists and the


structure you are familiar with with 1


comma 2 comma 3 is really just a


syntactic sugar in elixir for


representation a for the representation


where list contains a first element and


the rest of the list so we have a head


and so we have a head and the tail which


you can also patter much so this is


irrelevant you can patter much


you can patter much an empty list and


you can use pattern matching for


something more interesting than just


assigning to the variable so you have


kind of conditionals weave pattern


matching where you render some block


based on what was matched and what was


not matched it would it will also result


in an error if something is not matched


so this relevant yeah


you can also use pattern matching with


functions so not only with this


condition conditionals but also you can


just define multiple functions with the


same name and their function will the


function that that pattern matches will


be evaluated you have guards and the


poster tried of elixir is pipe operator


where you can pipe the result of one


operation to as the first argument to


the next function so instead of writing


for example this you can use pipelines


which I guess is not really interesting


for Ruby developers I guess you could


write hunky-dory dot reverse dot split


up case but never mind


yeah so you have code that you can you


have some operation that you might want


to write with pipelines but it will not


work very well it will break on


protection so you can just write


something like this using pattern


matching with cases so kind of similar


to the else if this is not really the


prettiest solution and we have a whiff


statement that this can be refactored to


yeah okay thanks good let's go good


evening


so stay at my computer because so anyway


I'm Tomas


rails developer and I'm a pro to Rails


developer and let me tell you why in a


minute but also I need to tell you one


more thing


I'm not a day-to-day developer let's say


well what that means is that in my


day-to-day work I I stand on the product


side but still firstly some disclaimers


if know that this is not a Tech Talk


it's also not a business talk to be


honest and yes I am fully aware that


this is a deaf conference I'm not lost


I know where I am I still this this is


what is that some diverse offer be a


website so I just copy that one day for


one definition I'm here to talk about


number of organizations so what they are


is usually you would think that there


are some people at the amnesty


international transparency internship or


whatever but those are only the big ones


they're also small ones and I will not


talk about them the ones that two


invisible jobs every day I borrowed this


slide from from previous talk it's not


very visible but you can you can realize


it's as PHP or else one one zero real


six and so on and so on


this real 6-0 MPM PHP when I when I do


it a little better PHP with WordPress or


Tyler made real sick zero so most of


most of the things that you know in


profit organizations get is for present


days and they spend three hours trying


to set it up which if someone helped


them with tailor-made application would


cost you a couple of hours of your life


and they would be super happy with it


all right III could tell you I could


tell you some vague statement like this


behave like a change I did I brought


down behave like you want everyone else


to behave but there would be two to wake


and what to do instead so you probably


know already where I'm going but with my


talk is in the past years I worked with


some organizations and I wrote a couple


of rails apps for them it's it's very


scary but don't worry because mostly


what they need is sunblock in 15 minutes


like applications for several of their


of their scaffold and rails is good


enough for them and I showed the slide


before still this is way better for them


than having a WordPress today need to


maybe also hire someone to to tell it


Tyler made it for them but the initial


idea of it which they had was the PHP


and WordPress is gonna be easy so my


advice to all of you is just as they say


in an unnamed commercial airline sit


back relax and maybe reach out to some


of your local community or communities


and they don't need to be local just


spend some of your time help some


fantastic people that are doing


invisible jobs perfectly life's easier


and if you're if you didn't enjoy this


call if you didn't enjoy this talk don't


worry this is my cut which is deploying


for Capistrano thank you so I wanted to


click quickly tell you something about


Ruby and elixir interim interoperability


but before my name is Adam I'm working


at a recruiting company in Poznan I'm a


ruby / elixir develop developer or


exterior robe it depends so but moving


on you may ask why should I bother what


is the reason to make elixir and the


Ruby cooperate each other let's assume


this kind of situation when you building


an app in elixir and you want to call


some service external web service and


elixir is not that major that have a lot


of libraries that are wrapping those


kind of api's and in the Ruby world


probably if you choose a random API in


the web I'm there is that there is very


probable that you will find the gem for


that and this was the case I needed to


to connect to JIRA API and I didn't want


it to make it from scratch in elixir but


of course in the Ruby world there are a


lot of gems for that so I was thinking


if it's possible to connect those two


languages then the answer is sir


yes they can cooperate very well


actually now I'll try to quickly show


you how the thing is that there is a


port this is an airline library which is


used to run different programming


languages into the airlock virtual


machine and currently it supports Ruby


and Python but actually I am an elixir


developer so I don't want to write air


lung because it's not that developer


friendly as elixir so fortunately I


found wrapper for the elixir to to


Airlink port


and I was able to relatively easily run


Ruby code inside Alex here so this is


how it's done we are just using this


library this wrapper around a DeLong


port and we just starting a regular


addictive process with this line


suggesting where is actually our Ruby


code in our project then this this


function will return process identifier


which is used later on to call actually


a ruby code in this case this is a


police function with a string argument


and it is and then it's returned the


result but this is a very simple result


the real world example is a little bit


more difficult it's I don't know it's


visible right now so so let's consider


that this is an elixir code and here we


are starting a ruby process to call some


Ruby functions and here is the correct


valid ruby code and this is just code to


just authenticate with JIRA API we are


calling here this function which is


actually here with the arguments passed


past here and we have them here it looks


nice but there are some caveats some


problems with that for instance the one


problem is with data structure mapping


because they are different they're kind


of similar but they're different for


instance this is a how air long data


type types Maps


Ruby types if we are operating on the


simple data type like integers floats


strings it's okay but if we are doing


something with maps keyword lists maps


are kind of hashes in the Ruby world and


then we have a kind of problem but


that's solved with the library for


instance if we want to return a tuple in


Ruby we can do just like that


so this problem was solved but I've


faced a different problem because ruby


is an object-oriented language so if we


create an object here to connect the ER


client then return something and then we


we are closing here the process in


Erlang that was run a ruby code we just


lost this this object so in order to not


authenticate with the same credentials


each time when I want to make a call to


a external API I just solve this problem


probably it's not the best but it works


- just - just serialize those objects


and then I can receive it here in the


and the elixir environment turned into


some sort of beauty JWT token and return


yeah and actually that's all it works


really good and I recommend trying it


thanks okay we can start so I don't know


what this talk about I just wanted to


check how many things about different


topics I can stick into five minutes so


I should start already probably so I


have five things to say


one will be about people hides him


because he can save 60 euros prayer


second one will be why Ruby is not that


field one will be thank you for one will


be please help and 5/5 one will be well


we will see if I have some time so


people hides him he found why 260 euros


per year just by having fun so I will


just read it will be faster six years


ago with three friends we went to drug


camp where we meet Andrey who told me


that we should come to the rostra but I


said I won't be able to buy tickets


probably because of how fast they are


salt so he told me to help them organize


conference which sounded like his worst


most insane idea and because I'm from


the waist up which is like 700


kilometers from here but after a few


days and few talks with Andrey about


some board games I realized that


organizing conference is sending few


emails or making few calls so I didn't


don't need to be there so I started to


organize t-shirts after parties and so


on since then I'm always in charge of


before after funeral parties in pubs or


clubs that I never been before and I


never have to buy a ticket so there is


60 euros per year while Ruby is not dead


ok I have no time guys the this question


is not about Ruby language at all


it's always about our community if


client is asking you if Ruby is dead he


is wondering if he can mike develop get


developers when you live so he's really


caring about community not about


language at least I feel like that so


it's about how good are we into


convincing more developers to use our


language that have no issues at all and


so far after it was rough I feel like


super enthusiastic about what is the


shape of our community I don't mention


the language at all okay thank you I


wanted to say thank you for all you


people that are involved in this


community not only speakers organizers


supporters but mostly for people that


are enjoying all the climate with me the


people I can speak with in the after


parties and the people who are there to


be part of it and I am talking to all of


you guys and in particularly of course


our organization is ators all the


sponsors that we have on our web page


sorry I can try maybe


[Music]


not there okay yeah yeah you have them


there okay


and also guys who are with us here by


year and always be like a part of


community nico that is always playing


for us normal that is trying to convince


us to closure so we feel like we are


important because he came here to


convince us for something I don't know


why both drums are brothers I don't know


if I pronounced it correctly but they


are always giving car lightning talks


and one of them never can win book I


give fingers crossed for you today but


don't have big hopes again


yeah and I lost okay I mean okay okay


okay


so yeah you you or feel like I would say


thank you to all of you yeah okay good


we can go further okay


please help us I mean help us organize


next also Furby it's really joyful you


can save 60 euros I don't know what else


I could add and I have I don't know how


much time but it's me how which I met at


the do come there no maybe it's better


so how not to meet new people on the


drug camp me how I still my good friend


so I hope it won't be angry that I spoke


about that but I consider it really


funny so since I still have time I just


wanted to tell you a story about the


strangest way to get new friends in


greetings mijo and also how I made whole


the drug crew so when we arrived to the


duck comfit was already 2 a.m. but some


of the folks who still up because they


are nice community and we're waiting for


us even though we were already 4 hours


later it's because my driver had to


deploy a few hot fixes during the trip


so you had to make stops on random


parkings where we are he was like


looking for Altair


typing on the other hand so that took


sus some time so one of the guys who


were waiting for us in the drug camp


told us where we were supposed to sleep


but only two of us had our own beds and


four of us of course that would be me


because of the rest guys agreed that I


deserved that


greetings Audion it's gonna be different


and then yesterday a little bit I


wouldn't want to do lightning talk twice


but somebody asked me to play like


ending soundtrack or something of the


conference but I'd like to involve you a


little bit if you're okay with that


do you like singing yes yes no okay so


if you don't like singing you can like


maybe keep a rhythm or do something but


if everybody can make some kind of noise


that would be nice so I'll start with a


little melody that maybe everybody knows


and you can sing that or anything else


with any words you want and if you can


sing loud it's better but as you wish


okay we'll try there yeah you're in this


yes I can see I'm also a bit tired so


that's why I'd like to have some help


thank you


I'm not gonna code the whole song just


the four first nerds okay so you can


start now or whenever you feel like it I


can't hear you


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you can't really sing anything you like


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come on come on come on


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[Applause]


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you


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[Applause]