Ruby for .NET developer
Who is...
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What I've had changed
hardware:
PC to MBA
operating system:
Win to OSX
language:
C# to Ruby
technology:
ASP.NET to Rails
... and a few non technical things
work time:
9-5 to
when you want
location:
office to remote
quite nice list of changes ;)
Why
Canon EOS 5d Mark II
MBA & OSX
Martin Mazur
"Why you should talk to strangers" at DevDay’12
Pet project in Node.js
DRUG meetup
… and my own curiosity & “new things like”
But why leaving .NET?
Just DON’T
it’s not about leaving or not
it’s all about learning
So what really changed
ruby vs c#
code is very readable and mostly self-documenting
convention over configuration
if you need something there probably is a gem for that
dynamic and open type system
strong focus on testing
the same language family
some concepts “not translatable”
forelsket - Danish word which meaning: The euphoria you experience when you’re first falling in love.
schadenfreude another example
there is no concept like this in other languages, all traslations are "workaround"
Ruby blocks
1 def do_something(text)
2 reversed = text.reverse
3 yield reversed
4 reversed
5 end
6
7 test = do_something 'KGD.NET' do |txt|
8 txt.downcase!
9 end
10
11 puts test
=> ten.dgk
tooling
VS.NET is great IDE especially with R#
You could have similar experience with Ruby/Rails
RubyMine is a great IDE - a lot of your experience from VS+R# will be preserved
... but at some time I felt "owned" by the tools
VIM #FTW
community
gained a lot of populatity with startup boom
@dhh
seems to be more "remote friendly"
#DRAMA
philosophy
anti-java
designed to make programmers happy
principles of Conciseness, Consistency & Flexibility
DRY
let’s try simple web app
... from scratch
Installing version manager
Ruby: rvm (from https://rvm.io)
.net: kvm (from https://github.com/aspnet/home#getting-started)
Installing platform
Ruby: rvm install ruby
.net: kvm upgrade (to install latest version the K Runtime Environment (KRE))
Getting dependencies
ruby: bundle install
.net: kpm restore
ruby: gem install XXX
.net: kpm install XXX
Scaffold
ruby: rails new XXX
rails generate controller SomeController
rails g view SomeView
rails g model SomeClass
.net: yo aspnet (and name entered later)
yo aspnet:MvcController SomeController
yo aspnet:MvcView SomeView
yo aspnet:Class SomeClass
let’s go into code structure
compare all the things
RailsWay
good sides
- for business/coding people to prototype
- for less-experienced devs - to quickly get results
- for geniuses - they will handle any code
- mostly-CRUD apps
- logic-less systems
bad sides
- for advanced developers
- complex business logic
- long living business processes
- multiple teams
- predicable speed of work
NextWay - going out of Rails
- service objects
- repositories
- form objects
- adapters
- domain objects
- events
The Next Way is heavily influenced by DDD and classical OOP patterns
It reduces the Rails magic
Why it is important
What I like
lack of compilation / build step
... just save & refresh page
TDD all the thing culture
dynamic typing ... no need to care about types definition
rails console ... to quickly check ideas
Active Record and its models that "just works"
What I don’t like
lack of compilation / build step
... and finding typos only after run the tests
TDD all the thing... because this is the only way to check it
dynamic typing ... and finding decimal where integer was expected
rails console ... and changing things on production server
Active Record and need to look at database schema to find out attributes
Beware of…
raise TooMuchMagicError
Or translated to .NET:throw new TooMuchMagicException();
So again… what really changes?
It’s just a hammer
This is also a hammer
use the right tool for your job
Learn from others
?
THX
Available at:
https://talks.praglowski.com/ruby-for-dotnet-dev