Skip to content

Instantly share code, notes, and snippets.

View kxbmap's full-sized avatar

Tsukasa Kitachi kxbmap

26 followers · 0 following
  • Japan
View GitHub Profile
@kxbmap
kxbmap / Sample.scala
Created July 10, 2013 06:45
object Sample {
def unapply(i: Int): Option[String] = Some(i.toString)
def run(): Unit = (0: Short) match {
case Sample(r) => println(r)
}
}
@kxbmap
kxbmap / Main.scala
Last active December 17, 2015 17:49
色んなSQLをSlickで書くと？
import scala.slick.session.Database
import scala.slick.driver.H2Driver.simple._
case class Club(name: String, id: Option[Long] = None)
case class Student(name: String, classroom: String, clubId: Option[Long], id: Option[Long] = None)
trait DAO {
@kxbmap
kxbmap / NettyUtil.scala
Last active December 11, 2015 23:18
import io.netty.buffer.{Unpooled, ByteBuf}
import java.nio.charset.Charset
object NettyUtil {
implicit class ByteBufOps(val buf: ByteBuf) extends AnyVal {
def getUTF(index: Int): String = {
val length = buf.getUnsignedShort(index)
sliceToString(index + 2, length)
@kxbmap
kxbmap / Option.nut
Created June 28, 2012 16:43
SquirrelでOption
class Option {}
class Some extends Option {
constructor(value) {
this.value = value;
}
function map(f) {
return ::Some(f(value));
}
@kxbmap
kxbmap / 1.scala
Created January 10, 2012 12:30
Scala標準バージョンとScalazバージョン
val ACGT = "ACGT".to[Stream]
@annotation.tailrec
def solve0(n: Int, ss: Stream[List[Char]]): Stream[List[Char]] =
if (n == 0) ss
else solve0(n - 1, ACGT.flatMap(c => ss.map(c :: _)))
def solve(n: Int): Stream[String] =
solve0(n, Stream(Nil)) collect {
case cs if cs.containsSlice("AAG") => cs.mkString
@kxbmap
kxbmap / Sample
Created December 10, 2011 06:22
Scalazのminimum/maximumならOptionが返るから安心
object Sample extends App {
val seq = Seq(1, 2, 3)
val empty = Seq[Int]()
println(seq.max) // -> 3
// println(empty.max) // -> java.lang.UnsupportedOperationException: empty.max
import scalaz._, Scalaz._
@kxbmap
kxbmap / GoogleSearchAction.scala
Created October 30, 2011 19:37
IntelliJプラグイン開発のデモ(http://www.jetbrains.com/idea/training/demos/google_search.html)のコードをScalaで
package sample.plugin.google
import com.intellij.openapi.actionSystem.{PlatformDataKeys, AnAction, AnActionEvent}
import com.intellij.ide.BrowserUtil
import java.io.UnsupportedEncodingException
import java.net.URLEncoder
import scala.util.control.Exception._
class GoogleSearchAction extends AnAction {
@kxbmap
kxbmap / gist:921241
Created April 15, 2011 06:24
Scala2.8.1でList[java.util.Date].min
scala> trait DateOrdering extends scala.math.Ordering[java.util.Date] {
| def compare(x: java.util.Date, y: java.util.Date) = x.compareTo(y)
| }
defined trait DateOrdering
scala> implicit object Date extends DateOrdering
defined module Date
scala> List(new java.util.Date()).min
res6: java.util.Date = Fri Apr 15 15:16:18 JST 2011
@kxbmap
kxbmap / HelloJOCL.scala
Created March 28, 2011 19:01
JOCLチュートリアル(http://jogamp.org/wiki/index.php/JOCL_Tutorial)をScalaで。
package com.example.hellojocl
import java.nio.FloatBuffer
import util.Random
import com.jogamp.opencl.{CLBuffer, CLContext}
class HelloJOCL(ctx: CLContext) {
import HelloJOCL._
@kxbmap
kxbmap / MongoEnumNameMapField.scala
Created March 24, 2011 09:33
LiftでMongoDBにEnumeration#ValueをキーにしたMapを格納する net.liftweb.mongodb.Metaがprivate[mongodb]なのでLiftのパッケージ。。
package net.liftweb.mongodb.record.field
import _root_.net.liftweb.common.{Failure, Empty, Box, Full}
import _root_.net.liftweb.json.JsonAST.{JValue, JObject, JField, JNothing, JNull}
import _root_.net.liftweb.json.JsonParser
import _root_.net.liftweb.record.{Field, MandatoryTypedField, FieldHelpers}
import _root_.net.liftweb.mongodb.record.MongoRecord
import _root_.net.liftweb.util.Helpers.tryo
import _root_.com.mongodb.{BasicDBObject, DBObject}