| import ShuntingYard | |
| data Result = I Int | B Bool deriving (Eq) | |
| instance Show Result where | |
| show (I x) = show x | |
| show (B x) = show x | |
| evalMath :: String -> Result | |
| evalMath = rpn . shuntingYard . tokenize |
| [core] | |
| excludesfile = /Users/austin/.gitignore |
| function ip() { | |
| ifconfig | grep 'inet ' | grep -v '127.0.0.1' | awk '{ print $2 }' | |
| } |
| loadStuff :: Map -> Either String (ThingOne, ThingTwo) | |
| loadStuff params = do | |
| thingOne <- loadThingOne params | |
| thingTwo <- loadThingTwo params thingOne | |
| checkSomething thingTwo | |
| return (thingOne, thingTwo) |
| <h1><%= _('Profile') %></h1> | |
| <%= form_for @profile, :url => user_profile_path(@profile), :html => {:class => 'profile'} do |f| %> | |
| <%= render 'shared/errors', :model => @profile %> | |
| <dl> | |
| <dt><%= f.label :name, _('Name') %></dt> | |
| <dd><%= f.text_field :name %></dt> | |
| </dl> | |
| <dl> | |
| <dt><%= f.label :email, _('Email') %></dt> | |
| <dd><%= f.text_field :email %></dt> |
(from Haskell and Yesod by Michael Snoyman)
However, there is one issue that newcomers are often bothered by: why are IDs and values completely separate? It seems like it would be very logical to embed the ID inside the value. In other words, instead of having:
data Person = Person { name :: String }have
| 1.9.3p0 :001 > % % % % % | |
| => "%" | |
| 1.9.3p0 :002 > % % % % % % % % % % % | |
| => "%" | |
| 1.9.3p0 :003 > !?!??!:?! | |
| (irb):70: warning: string literal in condition | |
| => "!" | |
| 1.9.3p0 :004 > % . . * 0 | |
| => "" | |
| 1.9.3p0 :005 > 0_0 |
Cryptojs is hosted on Google Code. There is an npm module with source on Github.
So I had this situation where I needed to delete an object from the database, if it existed. This is what I wrote:
obj = get_object(1)
obj.destroy if obj
And as I wrote this, it seemed a bit awkward to me. We always said Ruby had a really elegant syntax, but I guess I've come to the place where I find it a little grating. The thing about this example is the asymmetry of it. Conceptually I feel like the if check goes with the assignment, but it's separated from it in a strange way.
| class CLI | |
| def process(input) | |
| if input == "q" | |
| puts "Goodbye" | |
| elsif input == "tweet" | |
| puts "tweeting" | |
| elsif input == "dm" | |
| puts "direct messaging" | |
| elsif input == "help" | |
| puts "helping" |