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| import scala.collection.immutable.TreeMap | |
| trait ToTreeMap[A] { | |
| type Result | |
| def treeMap(x: A): Result | |
| } | |
| trait LowerPriorityToTreeMap { | |
| implicit def plainMap[K, V](implicit ord: Ordering[K]): ToTreeMap[Map[K, V]] = |
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| 12:20:53.549 [main] INFO c.s.dynamics.DecisionTreeDynamics$ - Load Training data from: /Users/ezhulenev/data/NYSE/EQY_US_NYSE_BOOK_20130403. Filtered: AZ | |
| 12:20:53.677 [main] DEBUG c.s.dynamics.DecisionTreeDynamics$ - Training data set [1]: | |
| 12:20:53.686 [main] DEBUG c.s.dynamics.DecisionTreeDynamics$ - - OpenBookFile(AZ,A,2013-04-03,/Users/ezhulenev/data/NYSE/EQY_US_NYSE_BOOK_20130403/openbookultraAZ_A20130403_1_of_1) | |
| 12:20:53.686 [main] INFO c.s.dynamics.DecisionTreeDynamics$ - Load Validation data from: /Users/ezhulenev/data/NYSE/EQY_US_NYSE_BOOK_20130404. Filtered: AZ | |
| 12:20:53.687 [main] DEBUG c.s.dynamics.DecisionTreeDynamics$ - Validation data set [1]: | |
| 12:20:53.687 [main] DEBUG c.s.dynamics.DecisionTreeDynamics$ - - OpenBookFile(AZ,A,2013-04-04,/Users/ezhulenev/data/NYSE/EQY_US_NYSE_BOOK_20130404/openbookultraAZ_A20130404_1_of_1) | |
| 12:20:53.699 [main] INFO c.s.dynamics.ConfiguredSparkContext - Create spark context. Master: local[2]. App Name: OrderBookDynamics | |
| 12:20:55.330 [main] INFO com.scalafi.dyna |
ezhulenev
/ folds.scala
Last active
August 29, 2015 14:25
— forked from tonymorris/folds.scala
Fold exercises in Scala
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| trait MyOption[A] { | |
| def fold[B](n: => B, s: A => B): B | |
| // Define the usual Option API. | |
| // | |
| // * Constructors (on the object) | |
| // some | |
| // none | |
| // * methods | |
| // map |
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| object ServerSparkContext { | |
| private[this] lazy val _sqlContext = { | |
| val conf = new SparkConf() | |
| .setAppName("....") | |
| val sc = new SparkContext(conf) | |
| // TODO: Bug in Spark: http://stackoverflow.com/questions/30323212 | |
| val ctx = new HiveContext(sc) | |
| ctx.setConf("spark.sql.hive.convertMetastoreParquet", "false") |
ezhulenev
/ language_extra.hs
Created
May 18, 2016 14:31
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| {-# LANGUAGE FlexibleContexts #-} | |
| {-# LANGUAGE PolyKinds #-} | |
| {-# LANGUAGE RankNTypes #-} | |
| {-# LANGUAGE ScopedTypeVariables #-} | |
| {-# LANGUAGE DataKinds #-} | |
| {-# LANGUAGE GeneralizedNewtypeDeriving #-} | |
| {-# LANGUAGE MultiParamTypeClasses #-} | |
| {-# LANGUAGE RoleAnnotations #-} | |
| {-# LANGUAGE TypeFamilies #-} | |
| {-# LANGUAGE TypeOperators #-} |
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| object InstantInsanity extends App { | |
| type Cube = Seq[Char] | |
| val cubes: Seq[Cube] = Seq("BGWGBR", "WGBWRR", "GWRBRR", "BRGGWW").map(_.toSeq) | |
| // Rotate a cube 90 degrees over its Z-axis, leaving up and down in place. | |
| def rot: Cube => Cube = { case Seq(u, f, r, b, l, d) => Seq(u, r, b, l, f, d) } | |
| // Twist a cube around the axis running from the upper-front-right |
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| object InstantInsanity extends App { | |
| // scalastyle:off | |
| def undefined[T]: T = ??? | |
| def ⊥[T]: T = undefined | |
| trait R | |
| trait G | |
| trait B |
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