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require 'benchmark'

hash = { a: 1, b: 2, c: 3 }
keys = %i[a c d]
hash_proc = hash.to_proc

n = 500000

Benchmark.bmbm do |x|
  x.report('&hash') { n.times do

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module Fluent
  require 'fluent/plugin/in_tail'
  require 'fluent/parser'

  class FastRegexpTailInput < TailInput
    Plugin.register_input('fast_regexp_tail', self)

    include TextParser::TypeConverter

    def configure_parser(conf)

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require 'benchmark'
require 'ostruct'

#
#% ruby bench_filter.rb
#Rehearsal -------------------------------------------------------
#placeholder           0.120000   0.000000   0.120000 (  0.128608)
#ruby placeholder      0.550000   0.000000   0.550000 (  0.548257)
#dynamic placeholder   0.190000   0.000000   0.190000 (  0.196362)
#---------------------------------------------- total: 0.860000sec

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// Written in the D programming language.

import std.datetime;
import std.stdio;
import std.conv;
import std.file;

import tinysegmenter;

void main()

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Purpose 目的

Make .NET to .NET serialization more easily by embedding type information. Interoperability should be considered as possible. 型情報を埋め込むことで、.NET どうしのシリアライズをもっと楽にする。相互運用性は可能な限り考慮されるべき。

Usecase ユースケース

1. Serialize polimorphic collection (issue #58) ポリモーフィックなコレクションをシリアライズする
2. Serialize 'rich' domain model which has own data and logic (issue #47)

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■最初のtd-agent.conf
<source>
    type dstat
    tag dstat
    option -lcn
    delay 5
</source>

<match dstat>
  type copy

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sudo apt-get install -y build-essential
sudo apt-get build-dep -y postgresql
wget http://ftp.postgresql.org/pub/source/v9.2.8/postgresql-9.2.8.tar.gz
tar -zxvf postgresql-9.2.8.tar.gz
cd postgresql-9.2.8
export MAJOR_VER=9.2
./configure \
  --prefix=/opt/td-agent/embedded \
  --mandir=/opt/td-agent/embedded/share/postgresql/${MAJOR_VER}/man \
  --docdir=/opt/td-agent/embedded/share/doc/postgresql-doc-${MAJOR_VER} \

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D言語の話

テンプレートエンジン書くのに便利な機能がいくつかある．

CTFE

コンパイル時に関数が実行出来る．標準ライブラリの有名所は大抵コンパイル時にも動く(std.algorithm, std.range, std.string, etc...)．

import std.random, std.stdio;

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import yajl;
import vibe.data.serialization;
import vibe.data.json;

import std.datetime;
import std.stdio;
import std.json;
import std.traits, std.typecons;

static struct Handa

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Basic idea is here: https://github.com/fluent/fluentd/wiki/filter_label

Currently, <copy **> and <filter_set> is not implemented yet.

Implement Filter

The base Filter class is below:

module Fluent