mikewadhera

class Thunk

  def initialize(&block)
    @block = block
  end

  def method_missing(m, *args, &block)
    result = @block.call
    define_method(m) { result }
  end

mikewadhera

/** uses the initialize-on-demand holder class idom. */
public class Thunk {

   public T get() {
      return ComputeHolder.result;
   }

  private static class ComputeHolder {
    static final T result = doCompute();
  

mikewadhera

$ jruby script/console
Loading development environment (Rails 2.2.2)
>> ActiveRecord::Base.connection
*** inside no_conn_pool.rb's #checkout override...
*** jdbcmysql adapter configured with driver: com.mysql.jdbc.ReplicationDriver url: jdbc:mysql:replication://localhost:3306/involver_dev?zeroDateTimeBehavior=convertToNull&jdbcCompliantTruncation=false&useUnicode=true&characterEncoding=utf8
RuntimeError: The driver encountered an error: no connection available
	from /Users/mikewadhera/.gem/gems/activerecord-jdbc-adapter-0.9.1/lib/active_record/connection_adapters/jdbc_adapter.rb:330:in `initialize'
	from /Users/mikewadhera/.gem/gems/activerecord-jdbc-adapter-0.9.1/lib/active_record/connection_adapters/jdbc_adapter.rb:457:in `initialize'
	from /Users/mikewadhera/.gem/gems/activerecord-jdbc-adapter-0.9.1/lib/active_record/connection_adapters/jdbc_adapter.rb:53:in `jdbc_connection'
	from /Users/mikewadhera/.gem/gems/activerecord-jdbc-adapter-0.9.1/lib/jdbc_adapter/jdbc_mysql.rb:22:in `mysql_connection'

mikewadhera

[ ~/involver-rails ] master> time jruby script/runner "exit"
/Users/mikewadhera/.gem/gems/json-jruby-1.1.6-universal-java-1.6/lib/json/common.rb:60 warning: already initialized constant State
/Users/mikewadhera/.gem/gems/json_pure-1.1.6/lib/json/ext.rb:14 warning: already initialized constant JSON_LOADED

**Notice: C extension not loaded. This is required for optimum MongoDB Ruby driver performance.
/Users/mikewadhera/code/work/involver-rails/lib/platforms.rb:4 warning: already initialized constant SubdomainMappings
  SQL (1.0ms)   SET SQL_AUTO_IS_NULL=0
New Relic Agent not running.

real	0m26.544s

mikewadhera

(rdb:5) @config
{:url=>"jdbc:mysql:replication//localhost:3306/involver_dev?zeroDateTimeBehavior=convertToNull&jdbcCompliantTruncation=false&useUnicode=true&characterEncoding=utf8", :driver=>"com.mysql.jdbc.ReplicationDriver", :adapter=>"jdbcmysql", :username=>"root", :password=>"letmein", :port=>3306}
(rdb:5) spec
JdbcSpec::MySQL
(rdb:5) connection_class
ActiveRecord::ConnectionAdapters::JdbcConnection
(rdb:5) connection_class.new(@config)
ActiveRecord::ConnectionNotEstablished Exception: no connection available
(rdb:5) connection
nil

mikewadhera

<?xml version="1.0" encoding="UTF-8" ?>
<rss version="2.0"
   xmlns:prop="http://www.involver.com/schema/property-set.xsd"
   xmlns:media="http://search.yahoo.com/mrss/">

<channel>
  <title>RSS Example</title>
  <description>This is an example of an RSS feed</description>
  <link>http://www.domain.com/link.htm</link>
  <lastBuildDate>Mon, 28 Aug 2006 11:12:55 -0400 </lastBuildDate>

mikewadhera

Jun 17 19:24:00 domU-12-31-39-13-C1-41 rails[5015]: ActiveRecord::StatementInvalid (NativeException: com.mysql.jdbc.exceptions.MySQLNonTransientConnectionException: Connection.close() has already been called. Invalid operation in this state.: SELECT count(*) AS count_all FROM `users` ):    /vendor/rails/activerecord/lib/active_record/connection_adapters/abstract_adapter.rb:188:in `log'    /usr/jruby-1.3.1/lib/ruby/gems/1.8/gems/activerecord-jdbc-adapter-0.9.1/lib/active_record/connection_adapters/jdbc_adapter.rb:563:in `execute'    /usr/jruby-1.3.1/lib/ruby/gems/1.8/gems/activerecord-jdbc-adapter-0.9.1/lib/active_record/connection_adapters/jdbc_adapter.rb:623:in `select'    /usr/jruby-1.3.1/lib/ruby/gems/1.8/gems/activerecord-jdbc-adapter-0.9.1/lib/active_record/connection_adapters/jdbc_adapter.rb:559:in `select_one'    /vendor/rails/activerecord/lib/active_record/connection_adapters/abstract/database_statements.rb:19:in `select_value'    

mikewadhera

def sml_attr(name, options={)
    # Same as before

    if options[:default].respond_to?(:call)
      define_method sml_method(attribute), options[:default]
    elsif options[:default].nil?
      define_method sml_method(attribute), lambda {self.send(attribute)}
    end

    self.sml_attributes.push(attribute) if !self.sml_attributes.include?(attribute)

mikewadhera

1. Install to ~/.git_bash_prompt

2. Stick this in your ~/.profile or ~/.bash_profile or ~/.bashrc

if [ -f ~/.git_bash_prompt ]; then
  . ~/.git_bash_prompt
fi

3. PROFIT!

mikewadhera

<rss version="2.0" xmlns:media="http://search.yahoo.com/mrss/"> 
<channel> 
	<title>[Channel Name]</title> 
	<link>[Channel URL]</link> 
	<description>[Channel Description]</description> 
	<ttl>[Channel TTL]</ttl> 
	<item> 
		<title>[Title]</title> 
		<link>[Link to External]</link> 
		<guid>[Item GUID]</guid>