kmizu

use std::fmt;
use List::{Cons, Nil};
use std::sync::Arc;
 
#[derive(PartialEq, Clone)]
enum List<T> {
  Cons(T, Arc<List<T>>),
  Nil
}
 

kmizu

use lists::{filter, new_list};
 
mod lists {
  use std::fmt;
  use lists::List::{Cons, Nil};
  use std::sync::Arc;

  #[derive(PartialEq, Clone)]
  pub enum List<T> {
    Cons(T, Arc<List<T>>),

kmizu

use lists::{contains, new_list};
 
mod lists {
  use std::fmt;
  use lists::List::{Cons, Nil};
  use std::sync::Arc;

  #[derive(PartialEq, Clone)]
  pub enum List<T> {
    Cons(T, Arc<List<T>>),

kmizu

use lists::{count, new_list};
 
mod lists {
  use std::fmt;
  use lists::List::{Cons, Nil};
  use std::sync::Arc;

  #[derive(PartialEq, Clone)]
  pub enum List<T> {
    Cons(T, Arc<List<T>>),

kmizu

object NullAsInstanceOfInt {
  def main(args: Array[String]): Unit = {
    println { null.asInstanceOf[Int] == 0 } // true
    println{ null.asInstanceOf[Int] + 1 } // 1
    println{ null.asInstanceOf[Int] } // null
    println{ val x = null.asInstanceOf[Int]; x } // 0
  }
}

kmizu

package controllers

import play.api.mvc._

object Application extends Controller {
  def upload = Action(parse.multipartFormData) {
    request =>
      if (request.body.files.isEmpty) BadRequest("Invalid file!")
      else if (request.body.asFormUrlEncoded.isEmpty) BadRequest("Invalid data!")
      else Ok("Everything is okay!")

kmizu

object Hello {
  def main(args: Array[String]): Unit = {
    foo()
  }
  @inline def foo() = println("Foo")
}

kmizu

object TLambda {
  trait Lambda { type apply[a <: Lambda] <: Lambda }
  type Y = Lambda {
    type apply[f <: Lambda] = (Lambda {
      type apply[proc <: Lambda] = f#apply[Lambda {
        type apply[arg <: Lambda] = proc#apply[proc]#apply[arg]
      }]
    })#apply[Lambda {
      type apply[proc <: Lambda] = f#apply[Lambda {
        type apply[arg <: Lambda] = proc#apply[proc]#apply[arg]

kmizu

import scala.io._
import scala.util.parsing.combinator.syntactical._
import org.objectweb.asm.ClassWriter
import org.objectweb.asm.MethodVisitor
import org.objectweb.asm.Label
import org.objectweb.asm.Opcodes._

object Calculator extends StandardTokenParsers {
  lexical.delimiters ++= List(
    "(", ")","+","-","*","/", ">", "<", ">=", "<=", "=", ";"

kmizu

import scala.xml._
object Attrs {
  def unapplySeq(data: MetaData): Option[Seq[(String, String)]] = {
    Some(data.map{(m:MetaData) => (m.key, m.value(0).text)}.toList)
  }
  def main(args: Array[String]) {
     val foo = <foo a="1" b="2" c="3"/>
     //困ったことに、XMLリテラルは属性の順番を保存してくれないので、
     //ファイルから読み込むとか別の方法が必要
     //XML.loadStringとかだと属性が逆順で読み込まれるっぽい