katzchang

<?PHP

class F {
    public static function curry($f) {
        return new F($f);
    }

    private function __construct($f, $args = []) {
        $this->f = $f;
        $this->args = $args;

katzchang

```
Sigdump at 2014-08-10 18:45:49 +0900 process 1977 (/usr/sbin/td-agent)
  Thread #<Thread:0x007f191859bf68> status=run priority=0
      /usr/lib64/fluent/ruby/lib/ruby/gems/1.9.1/gems/sigdump-0.2.2/lib/sigdump.rb:38:in `dump_backtrace'
      /usr/lib64/fluent/ruby/lib/ruby/gems/1.9.1/gems/sigdump-0.2.2/lib/sigdump.rb:24:in `block in dump_all_thread_backtrace'
      /usr/lib64/fluent/ruby/lib/ruby/gems/1.9.1/gems/sigdump-0.2.2/lib/sigdump.rb:23:in `each'
      /usr/lib64/fluent/ruby/lib/ruby/gems/1.9.1/gems/sigdump-0.2.2/lib/sigdump.rb:23:in `dump_all_thread_backtrace'
      /usr/lib64/fluent/ruby/lib/ruby/gems/1.9.1/gems/sigdump-0.2.2/lib/sigdump.rb:16:in `block in dump'
      /usr/lib64/fluent/ruby/lib/ruby/gems/1.9.1/gems/sigdump-0.2.2/lib/sigdump.rb:107:in `open'
      /usr/lib64/fluent/ruby/lib/ruby/gems/1.9.1/gems/sigdump-0.2.2/lib/sigdump.rb:107:in `_open_dump_path'

katzchang

package mse

import java.io._
import org.bytedeco.javacpp.helper.opencv_core.AbstractCvMat
import org.bytedeco.javacpp.opencv_core._
import org.bytedeco.javacpp.opencv_highgui._

object MSE {
  def main(args: Array[String]) {
    val ms =

katzchang

負荷低すぎ問題は障害ではなくパフォーマンスチューニング

負荷低すぎはもはや障害じゃないのかという記事の話。

そうすると、 『イベントで一時的にc4.4xlarge(8万/月)にして、そのまま最大CPU使用率10%とかで数ヶ月放置されている』 みたいなのはビジネス的な損失という意味で明らかに障害で、監視すべきじゃないだろうか？

とのこと。

katzchang

import sbt._
import sbt.Keys._
import com.earldouglas.xwp.XwpPlugin._
import sbtassembly.Plugin._
import AssemblyKeys._

object BuildSettings {
  val buildOrganization = "jp.zucks"
  val buildVersion = "1.0.0-SNAPSHOT"
  val buildScalaVersion = "2.11.6"

katzchang

<?php

class Curry
{
    protected $callback, $bind;
    protected function __construct($callback, Array $bind)
    {
        if(!is_callable($callback)) throw new InvalidArgumentException('$callback must be callable');
        list($this->callback, $this->bind) = func_get_args();
    }

katzchang

<?php

class Curry
{
    protected $callback, $bind;
    protected function __construct($callback, Array $bind)
    {
        if(!is_callable($callback)) throw new InvalidArgumentException('$callback must be callable');
        list($this->callback, $this->bind) = func_get_args();
    }

katzchang

public class HelloCarry {
  static <E1, E2, E3> Func<E1, Func<E2, E3>> carry(final Func2<E1, E2, E3> f2) {
    return new Func<E1, Func<E2,E3>>() {
      @Override
      public Func<E2, E3> apply(final E1 e1) {
        return new Func<E2, E3>() {
          @Override
          public E3 apply(E2 e2) {
            return f2.apply(e1, e2);
          }};

katzchang

package coderetreat

import org.scalatest.Assertions
import org.junit.Test

class GameOfLifeSuite extends Assertions {
  @Test def game_of_life() {
    assert(new Board(3, 4, Set()).toString === "000,000,000,000")
    assert(new Board(3, 4, Set((0, 0), (0, 1), (1, 1))).toString === "110,010,000,000")

katzchang

GOSH=/usr/local/bin/gosh
L=./gu.scm

test:
	$(GOSH) -l $(L) ./*test.scm