linusthe3rd’s gists

linusthe3rd / gist:1214651

Created September 13, 2011 18:43

gem folder structure

linusthe3rd / gist:1085443

Created July 15, 2011 20:03

Hadoop Login Failure stacktrace

	11/07/15 19:53:07 ERROR namenode.NameNode: java.io.IOException: failure to login
	at org.apache.hadoop.security.UserGroupInformation.getLoginUser(UserGroupInformation.java:408)
	at org.apache.hadoop.security.UserGroupInformation.getCurrentUser(UserGroupInformation.java:384)
	at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.setConfigurationParameters(FSNamesystem.java:420)
	at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.<init>(FSNamesystem.java:391)
	at org.apache.hadoop.hdfs.server.namenode.NameNode.format(NameNode.java:1240)
	at org.apache.hadoop.hdfs.server.namenode.NameNode.createNameNode(NameNode.java:1348)
	at org.apache.hadoop.hdfs.server.namenode.NameNode.main(NameNode.java:1368)
	Caused by: javax.security.auth.login.LoginException: java.lang.NullPointerException
	at com.ibm.security.auth.module.LinuxLoginModule.login(LinuxLoginModule.java:165)

linusthe3rd / grade_select.erb

Created May 18, 2011 18:00

Rails - Create a select tag for grades K-12

	<%= f.label :grade %>
	<%= f.select(:grade, (["K"] \| (1..12).to_a))%>

linusthe3rd / gist:947469

Created April 28, 2011 22:22

POST request output

	SQL (2.8ms) describe `roles_users`
	SQL (2.1ms) describe `camps_users`
	SQL (3.4ms) describe `camps_users`
	SQL (2.0ms) describe `campers_camps`
	SQL (2.8ms) describe `campers_camps`
	SQL (2.1ms) describe `roles_users`
	Loaded suite test/functional/camp/contacts_controller_test
	Started
	SQL (0.1ms) BEGIN
	SQL (0.7ms) SHOW TABLES

linusthe3rd / programs_test.rb

Created March 14, 2011 02:22

	test "get collection of open programs" do
	get :index, :camp_id => camps(:bolo).uri, :open => true
	assert_response :success

	programs = assigns(:programs)

	programs.each do \|program\|
	program.program_populations.each do \|pop\|
	assert_not_equal pop.current_population, pop.max_population
	end

linusthe3rd / gist:868658

Created March 14, 2011 02:06

	def get_camp
	@camp = Camp.find_by_uri(params[:camp_id])
	if !@camp
	#call parent 404 method because no record was found
	#ActiveRecord::RecordNotFound is not being called
	self.render_400
	end
	end

linusthe3rd / gist:868646

Created March 14, 2011 01:42

	SQL (1.2ms) describe `campers_camps`
	SQL (1.2ms) describe `campers_camps`
	Creating scope :open. Overwriting existing method Program.open.
	Creating scope :open. Overwriting existing method Session.open.
	Loaded suite functional/camp/programs_controller_test
	Started
	SQL (0.1ms) BEGIN
	SQL (0.7ms) SHOW TABLES
	Camp Load (0.5ms) SELECT `camps`.* FROM `camps` WHERE (`camps`.`id` = 665138414) LIMIT 1
	Processing by Camp::ProgramsController#index as HTML

linusthe3rd / programs.rb

Created March 14, 2011 01:39

named scopes I am using

	scope :open, lambda {
	joins(:program_populations).
	where('program_populations.current_population < program_populations.max_population').
	group("programs.id")
	}
	scope :closed, lambda {
	joins(:program_populations).
	where('program_populations.current_population >= program_populations.max_population').
	group("programs.id")
	}

linusthe3rd / gist:868644

Created March 14, 2011 01:38

	def index
	query = ''
	queryHash = Hash.new

	if params[:min_age]
	append_to_query(query, 'min_age >= :min_age')
	queryHash[:min_age] = params[:min_age]
	end

	if params[:max_age]

linusthe3rd / gist:828176

Created February 15, 2011 20:26

Attaching an event callback to an iFrame's onload event in IE

	/**
	* This code comes from JeremyMiller on the following thread:
	* http://bytes.com/topic/javascript/answers/510057-iframe-ie-onload-problem#post3402334
	*/
	eventPush(document.getElementById('frame_id'),'load',function () {myFrameOnloadFunction();});

	function eventPush(obj, event, handler) {
	if (obj.addEventListener) {
	obj.addEventListener(event, handler, false);
	} else if (obj.attachEvent) {

John linusthe3rd