## Wednesday, September 14, 2016

### Eye Of Minerva

Brutal death metal but they could have been playing wrong notes all night and I couldn't have told the difference.

Fear Factory

Soilwork

Omnikage

## Wednesday, April 20, 2016

### Scala varargs and splats

Coming from a Python background, I got a lot of mileage out of the easy sequence parameter expansion pattern:

def foo(a,b,c): bar()
L = [1,4,"s"]
foo(*L)

This implicitly takes a sequence type (in this case, a list) and explodes its contents into the parameters a,b,c. (You have to watch out that the sequence  contains the right number of parameters, of course.)

In Scala, which I'm writing for my current job, I was pleasantly surprised to find that the same kind of functionality exists, as long as the function is declared varargs:

def foo(ts: T*)
L = List(t0,t1,t2)
foo(L :_*)

This is especially useful if, for example, foo() is defined in some Java library that doesn't do any kind of polymorphism well.

Apparently, the ":_*" type annotation on the end there is called the "splat operator" (much easier to pronounce), and it's a part of the Scala Language Specification.

## Monday, January 4, 2016

### This is totally a bookmark

Hundreds of open datasets on which to practice one's data science chops.

UCI Machine Learning Archive