lulalala

# for x264
./configure --enable-static \
 --disable-opencl \
 --disable-avs \
 --disable-cli \
 --disable-ffms \
 --disable-gpac \
 --disable-lavf \
 --disable-swscale \
 --prefix=/usr/local/

lulalala

    def inspect
      result = instance_variables.each
        .with_object({}) { |name, h| h[name] = instance_variable_get(name) }
        .reject { |name, value| value.nil? }
        .map { |name, value|
          case value
          when true, false, Symbol, Numeric, Array, Hash
            "#{name}=#{value.inspect}"
          when String
            if value.length > 80

lulalala

class Banner < ActiveRecord::Base
  attr_accessor :image_width, :image_height
  mount_uploader :image, ImageUploader
  
  validate :check_dimensions, :on => :create
  def check_dimensions
    if !image_cache.nil? && (image.width < 300 || image.height < 300)
      errors.add :image, "Dimension too small."
    end
  end

lulalala

function rspecgrep()
{
  SPK_FILES=`find spec -type f -name "*_spec.rb" | grep $1`
  echo $SPK_FILES
  time rspec $SPK_FILES  --format documentation
}

lulalala

前言

軟體工程師都很能理解營運一個網站，完善的 log 系統是不可或缺的。 除了在發生錯誤時能用來除錯以外，也能透過資料分析來當作各項指標， 進行科學的自我改善。

同樣的，一個人生活中，紀錄不也有同樣的好處嗎？ 有了紀錄，可以查詢到上次感冒是什麼時候， 新的習慣養成是否成功，生活上有什麼大小改變等等。

lulalala

require 'bundler'
Bundler.setup(:default)

require 'active_record'
require 'minitest/autorun'
require 'logger'

# This connection will do for database-independent bug reports.
ActiveRecord::Base.establish_connection(adapter: 'sqlite3', database: ':memory:')
ActiveRecord::Base.logger = Logger.new(STDOUT)

lulalala

There are many use cases where the ActiveModel::Errors interface is tedious to use, such message formatting and testing. This talk presents these cases, and explains why the limitation can be simply solved by taking an object-oriented approach, which results in the AdequateErrors gem. The gem's implementation is explained, and the talk will showcase examples on how it can make your coding life easier.

lulalala

require 'uri'
require 'net/http'
class RedirectResolver
  def self.resolve(uri)
    uri_input = uri

    if uri.is_a? String
      uri = URI.parse(uri)
    end

lulalala

foo.with_lock do
  # insert a
  bar.with_lock do
    # Mysql2::Error: Lock wait timeout exceeded
  end
end

lulalala

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