igaiga

- (void)deviceCheck{
    NSString* devicemodel = [[UIDevice currentDevice].model lowercaseString];
    NSLog(@"device model = %@", devicemodel);
    // @"ipod touch", @"iphone", @"iphone simulator"
}

igaiga

// X sec 待つ
[NSThread sleepUntilDate:[NSDate dateWithTimeIntervalSinceNow:2]];


// アニメーション開始時刻を遅らせる場合
view.alpha     = 1.0f;
[UIView beginAnimations:nil context:NULL];
[UIView setAnimationDelay:3]; // 3sec
[UIView setAnimationDuration:2.0];    
view.alpha     = 0.0f;

igaiga

# -*- coding: utf-8 -*-
# 0-9a-zの7文字の文字列取得
# ただし乱数度合いは厳密ではない
c = "0123456789abcdefghijklmnopqrstuvwxyz"
str = ""
7.times{ str += c[rand(c.size)] }
p str

igaiga

# Rails3 で vendor/plugins/ 以下のspecファイルを実行するrake task.
# lib/tasks/ 以下にこのファイルを置けば rake -T に追加される。
namespace :spec do
  desc 'Run the code examples in plugins'
  task :plugins do
   system 'bundle exec rspec vendor/plugins/'
  end
end

igaiga

x = 0.0
10.times do 
 x += 0.1
end
p x
if x == 1.0
  puts 'true'
else
  puts 'false'
end

igaiga

# -*- coding: utf-8 -*-
class C
  X = 12
  def set_x(arg)
    X = arg #←ここでエラー "5: dynamic constant assignment"
  end
end
c = C.new
c.set_x(34)

igaiga

total_amount.toString().replace( /([0-9]+?)(?=(?:[0-9]{3})+$)/g , '$1,' );

igaiga

# -*- coding: utf-8 -*-
# $ rails runner self.rb
class C
  def foo
    'FOO'
  end
end

class C
  # 既存メソッドfooと一緒に呼ぶ新しいメソッド foo_with_XXXを定義

igaiga

require 'rinda/tuplespace'
$ts = Rinda::TupleSpace.new
DRb.start_service('druby://:12345', $ts)
puts DRb.uri
DRb.thread.join

igaiga

#=> irb
require 'drb'
#=> true
$ts = DRbObject.new_with_uri('druby://localhost:12345')
#=> #<DRb::DRbObject:0x10136d740 @uri="druby://localhost:12345", @ref=nil>
$ts.write(["message", "Hello, world!"])
#=> #<DRb::DRbObject:0x10135e060 @uri="druby://127.0.0.1:12345", @ref=2152218120>
$ts.take(["message",nil])
#=> ["message", "Hello, world!"]