koic

$ ruby -v                                                                                                        ✖ ✹ ✭
ruby 2.2.0p0 (2014-12-25 revision 49005) [x86_64-darwin13]
$ PKG_CONFIG_PATH=/usr/local/opt/libffi/lib/pkgconfig gem install rabbit
Fetching: glib2-3.0.5.gem (100%)
Building native extensions.  This could take a while...
Successfully installed glib2-3.0.5
Fetching: gobject-introspection-3.0.5.gem (100%)
Building native extensions.  This could take a while...
Successfully installed gobject-introspection-3.0.5
Fetching: gio2-3.0.5.gem (100%)

koic

CFLT for RubyKaigi 2015

Title

Agile Software Development with Edge Ruby

Abstract

Ruby / Rails をもちいたソフトウェア開発の中で、Ruby の開発バージョン (発表時 2.3.0-dev) を取り入れているお話をします。本番環境は本番環境、開発環境は開発環境ということで、明日から個人ではじめられる話です。 プログラミングを楽しくする言語 Ruby のことをもっと知りたいという気持ちを持ち帰って頂ければ幸いです。

koic

# Activate the gem you are reporting the issue against.
gem 'activerecord', '4.2.5'
gem 'activerecord-oracle_enhanced-adapter', '1.6.5'
require 'active_record'
require 'minitest/autorun'
require 'logger'
require 'active_record/connection_adapters/oracle_enhanced_adapter'

# Ensure backward compatibility with Minitest 4
Minitest::Test = MiniTest::Unit::TestCase unless defined?(Minitest::Test)

koic

"Extreme Fish Bowl" Bootstrap Cheat Sheet

1. bundle init

$ bundle init

2. Add rspec to Gemfile

koic

mkdir foo
cp migration_archive.tar.gz foo/
cd foo
git init
tar zxvf migration_archive.tar.gz
rm migration_archive.tar.gz
git add *
git commit -m * 'Initial commit'
rm users_*.json teams_*.json organizations_*.json
git commit . -m 'Remove org info'

koic

Problem

何かの拍子で 2.3.0 に旧バージョンの did_you_mean を入れていたらしい。。。

$ ruby -v -e 'def hi; hi; end; hi'
ruby 2.3.0p0 (2015-12-25 revision 53290) [x86_64-darwin13]
/Users/koic/.rbenv/versions/2.3.0/lib/ruby/gems/2.3.0/gems/interception-0.5/lib/cross_platform.rb:66: 
warning: method redefined; discarding old start
/Users/koic/.rbenv/versions/2.3.0/lib/ruby/gems/2.3.0/gems/interception-0.5/lib/interception.rb:113: w

koic

Problem

Warning (emacs): Unable to activate package `helm-ag'.
Required package `helm-1.7.7' is unavailable

A Solution

koic

bundle exec rake db:migrate:status | sed 's/\s\{1,\}/ /g' | cut -f3 -d ' ' > tmp/schema.txt

# Remove the header of above file

ls db/migrate | sed 's/db\/migrate//g' | cut -f1 -d '_' > tmp/file.txt

diff tmp/schema.txt tmp/file.txt

koic

Enumerable#sort without block

# http://ruby-doc.org/core-2.3.1/Enumerable.html#method-i-sort
require "benchmark"

a = (1..100000).map { rand(100000) }

Benchmark.bm(10) do |b|
 b.report("Sort") { a.sort }

koic

require 'yaml'

puts YAML.load(DATA.read) # => {"name"=>"Bob"}

__END__
---
name: Alice
name: Bob