March 2010
6 posts
1 tag
an old man and a park bench
I sat down next to an old man on a park bench today. He said to me:
Are you just going to sit there?
So I said:
Why do you ask?
To which he replied:
I’m an old man. These days, what I enjoy most is to sit here and watch others go about their business, over and over, and over again.
I went on my way. I came back to the bench the next day and the old man and the bench was...
scope escaping shadow of peter pan
I just thought the error message the following code generates was a little silly.
object PeterPan {
private case class Shadow(length: Int)
def shadow = Shadow(10)
}
error: private class Shadow escapes its defining scope as part of type PeterPan.Shadow
an applied case for red ninjas
One of my favorite things about scala are case classes. Those coming from a java background might be used to writing code like this.
public class Ninja {
private int experience;
private List<Weapon> weapons;
private String color;
public Ninja(int experience, List<Weapon> weapons, String color) {
this.experience = experience;
this.weapons = weapons;
this.color =...
implicitly subtle imports
One of Scala’s cheekier features, implicit declarations, can sometimes conjure up subtle gotchas. Besides being infamous for being a pimp, Scala’s implicits are also play the role of a magician by providing the illusion of default function arguments, a first class feature in 2.8.
I recently came across a subtle gotcha when using implicit function arguments, but first, it might be...
1 tag
37 salad dressings
I’m thinking of a spork with no knives
As a younger man, one of my favorite types of restaurants to eat at were buffets. What can be better than an endless supply of everything? I pay one price and get as much as I want. So many choices!
As I got a little older, I started noticing a couple things about these types of restaurants. For starters, I never actually ate everything on the...
2 tags
i've got objects in my specs
If you are a bdd’r and just happen to be upgrading from sbt 0.5.6 to 0.7.1, when you run your specs, you just might be greeted with the lovely message:
Could not instantiate class foo.Bar: foo.Bar
The quick fix is to write your specs as classes rather than objects. I know. Classes?
I’m using the latest 2.7.7 supported version of specs.
val specs = "org.scala-tools.testing" %...
