Skip to content

Instantly share code, notes, and snippets.

package models
import scalikejdbc._
import skinny.orm.{SkinnyCRUDMapper, SkinnyRecord}
case class Example( id: Long, name: Option[String] = None ) extends SkinnyRecord[Example] {
def skinnyCRUDMapper = Example
}
object Example extends SkinnyCRUDMapper[Example] {
import scala.Predef.;
import scala.Serializable;
import scala.collection.immutable.Range.Inclusive;
import scala.runtime.AbstractFunction1;
import scala.runtime.BoxedUnit;
import scala.runtime.RichInt.;
public final class Hello$
{
public static final MODULE$;
val xml =
<body>
<item>
<name>aaaaa</name>
<url>httpppppp</url>
<description>cccc</description>
</item>
<item>
<name>aaaaa</name>
<url>httpppppp</url>
// 失敗する処理
def fail(i: Int): Either[String,Int] = Left(s"error occored from $i")
// 成功する処理
def success(i: Int): Either[String,Int] = Right(i + 1)
println("すべて成功する (e is 5)")
val result0 = for {
a <- success(0).right
b <- success(a).right
@kkismd
kkismd / DbItem.scala
Last active August 29, 2015 14:19 — forked from gakuzzzz/enum.scala
type Database = Map[String, Any]
case class Item[+A](name: String) {
def get(d: Database) = d(name).asInstanceOf[A]
}
implicit class DB(val d: Database) extends AnyVal {
def get[A](n: Item[A]): A = n.get(d)
}
import scala.swing._
object Hello extends SimpleSwingApplication {
def top = new MainFrame {
title = "Hello world"
contents = new Label("Hello world")
}
}
@kkismd
kkismd / maybe.rb
Created August 1, 2014 06:06
Uncertain method chain without #try, another ver.
module Kernel
def maybe
block_given? && yield
rescue NoMethodError
end
end
@kkismd
kkismd / maybe.rb
Created July 31, 2014 09:06
Uncertain method chain without #try
class Maybe < BasicObject
def initialize(obj)
@just = obj
end
# for debug
def inspect
"#<Maybe: just(#{@just.inspect})>"
end
@kkismd
kkismd / fizzbuzz.rb
Created July 20, 2014 10:52
4行でFizzBuzz
fizzbuzz = ->(i){ i % 3 == 0 && i % 5 == 0 ? 'FizzBuzz' : i }
fizz = ->(i){ i % 3 == 0 ? 'Fizz' : i }
buzz = ->(i){ i % 5 == 0 ? 'Buzz' : i }
(1..16).map(&fizzbuzz).map(&fizz).map(&buzz)

Gitの中身を説明してみる

  1. Gitではソースコードのツリー構造をグラフデータベースで管理している

Git用語 ファイルシステム graph用語
blob ファイル内容 エッジ
tree ディレクトリ ノード