benjamintanweihao

require "active_record"

puts "AR Version: #{ActiveRecord::VERSION::MAJOR}"
 
ActiveRecord::Base.establish_connection(adapter: "sqlite3", database: ":memory:")
 
ActiveRecord::Schema.define do
  create_table :languages do |t|
    t.string :type
  end

benjamintanweihao

class Order
  def initialize
    @line_items = []
  end

  def add_line_item(line_item)
    @line_items << line_item
  end

  def total

benjamintanweihao

<IfModule mod_rewrite.c>
Options +FollowSymLinks
RewriteEngine On
RedirectMatch ^/$ http://www.longurl.com
RewriteBase /
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^([0-9A-Za-z]+)/?$ /yourls-go.php?id=$1 [L]
RewriteRule ^([0-9A-Za-z]+)\+/?$ /yourls-infos.php?id=$1 [L]
RewriteRule ^([0-9A-Za-z]+)\+all/?$ /yourls-infos.php?id=$1&amp;all=1 [L]

benjamintanweihao

    @Override
    @TargetApi(11)
    public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
        super.onCreateOptionsMenu(menu, inflater);
        inflater.inflate(R.menu.fragment_cheng_yu_list, menu);

        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB) {
            MenuItem searchItem = menu.findItem(R.id.menu_item_search);
            SearchView searchView = (SearchView) MenuItemCompat.getActionView(searchItem);

benjamintanweihao

package com.benjamintanweihao.bookeesg.product;

import com.benjamintanweihao.bookeesg.R;

import android.graphics.Bitmap;
import android.os.AsyncTask;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentActivity;
import android.support.v4.app.FragmentManager;

benjamintanweihao

package com.benjamintanweihao.bookeesg.product;

import com.benjamintanweihao.bookeesg.R;

import android.graphics.Bitmap;
import android.os.AsyncTask;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentActivity;
import android.support.v4.app.FragmentManager;

benjamintanweihao

# Video: http://rubyhoedown2008.confreaks.com/08-chris-wanstrath-keynote.html

Hi everyone, I'm Chris Wanstrath.

When Jeremy asked me to come talk, I said yes.  Hell yes.  Immediately.  But
then I took a few moments and thought, Wait, why?  Why me?  What am I supposed
to say that's interesting?  Something about Ruby, perhaps.  Maybe the
future of it.  The future of something, at least.  That sounds
keynote-y.

benjamintanweihao

defmodule Crypto do
    def md5(s) do
        list_to_binary(Enum.map(bitstring_to_list(:crypto.md5(s)), fn(x) -> integer_to_binary(x, 16) end))
    end
end

benjamintanweihao

# brew install mahout
# export MAHOUT_DIR="/usr/local/Cellar/mahout/0.8/"
puts "#{ENV['MAHOUT_DIR']}libexec/*.jar"
Dir.glob("#{ENV['MAHOUT_DIR']}/libexec/*.jar").each { |d| require d }

MahoutFile = org.apache.mahout.cf.taste.impl.model.file
model = MahoutFile.FileDataModel.new(java.io.File.new("data.csv"))

MahoutSimilarity = org.apache.mahout.cf.taste.impl.similarity
similarity = MahoutSimilarity.TanimotoCoefficientSimilarity.new(model)

benjamintanweihao

MahoutFile = org.apache.mahout.cf.taste.impl.model.file
model = MahoutFile.FileDataModel.new(java.io.File.new("data.csv"))

MahoutSimilarity = org.apache.mahout.cf.taste.impl.similarity
# similarity = MahoutSimilarity.TanimotoCoefficientSimilarity.new(model)
similarity = MahoutSimilarity.LogLikelihoodSimilarity.new(model)

MahoutNeighborhood = org.apache.mahout.cf.taste.impl.neighborhood
neighborhood = MahoutNeighborhood.NearestNUserNeighborhood.new(2, similarity, model)