(C-x means ctrl+x, M-x means alt+x)
The default prefix is C-b. If you (or your muscle memory) prefer C-a, you need to add this to ~/.tmux.conf
:
#!/usr/bin/ruby | |
class IPGenerator | |
public | |
def initialize(session_count, session_length) | |
@session_count = session_count | |
@session_length = session_length | |
@sessions = {} | |
end |
// transcribed from an Apache Spark 1.0 spark-shell session | |
// using data from http://chriswhong.com/open-data/foil_nyc_taxi/ | |
// and the QTree algorithm for approximate quantiles over large datasets | |
// each of the distanceRange and minutesRange calculations below takes about 15 minutes on my four-core SSD-based Macbook Pro | |
import com.twitter.algebird._ | |
import com.twitter.algebird.Operators._ | |
implicit val qtSemigroupD = new QTreeSemigroup[Double](6) | |
val in = sc.textFile("trip_data") // a directory containing all the trip_data*.csv files downloaded from the above link |
development: | |
adapter: mysql2 | |
encoding: utf8 | |
database: my_database | |
username: root | |
password: |
import com.twitter.scalding._ | |
import cascading.pipe.Pipe | |
import spray.json.JsonWriter | |
import org.apache.hadoop.io.BytesWritable | |
case class Sequins[V](p : String)(implicit writer: JsonWriter[V]) | |
extends FixedPathSource(p) | |
with WritableSequenceFileScheme | |
with TypedSink[(String, V)] { |
From Wikipedia:
Epicyclic gearing or planetary gearing is a gear system consisting of one or more outer gears, or planet gears, revolving about a central, or sun gear. … Epicyclic gearing systems also incorporate the use of an outer ring gear or annulus, which meshes with the planet gears.
Use the menu in the top-left to change the frame of reference, fixing the specified gear in-place.
/** | |
* To get started: | |
* git clone https://github.com/twitter/algebird | |
* cd algebird | |
* ./sbt algebird-core/console | |
*/ | |
/** | |
* Let's get some data. Here is Alice in Wonderland, line by line | |
*/ |
// http://en.wikipedia.org/wiki/Decorator_pattern | |
trait Coffee { | |
def cost:Double | |
def ingredients: String | |
} | |
class SimpleCoffee extends Coffee { | |
override def cost = 1 | |
override def ingredients = "Coffee" |
import com.twitter.algebird.{Aggregator, Semigroup} | |
import com.twitter.scalding._ | |
import scala.util.Random | |
/** | |
* This job is a tutorial of sorts for scalding's Execution[T] abstraction. | |
* It is a simple implementation of Lloyd's algorithm for k-means on 2D data. | |
* | |
* http://en.wikipedia.org/wiki/K-means_clustering |