jarrodhroberson’s gists

jarrodhroberson / HealthStateSerializer.java

Last active August 29, 2015 13:56

ObjectName Serializer for Jackson, recursively serializes to JSON

	package com.vertigrated.mbean.jackson;

	import com.fasterxml.jackson.core.JsonGenerator;
	import com.fasterxml.jackson.core.JsonProcessingException;
	import com.fasterxml.jackson.databind.JsonSerializer;
	import com.fasterxml.jackson.databind.SerializerProvider;
	import weblogic.health.HealthState;

	import java.io.IOException;

jarrodhroberson / debounce.js

Created February 8, 2014 14:46

Returns a function, that, as long as it continues to be invoked, will not be triggered. The function will be called after it stops being called for N milliseconds. If `immediate` is passed, trigger the function on the eading edge, instead of the trailing.

	// Returns a function, that, as long as it continues to be invoked, will not
	// be triggered. The function will be called after it stops being called for
	// N milliseconds. If `immediate` is passed, trigger the function on the
	// leading edge, instead of the trailing.
	function debounce(func, wait, immediate) {
	var timeout;
	return function() {
	var context = this, args = arguments;
	clearTimeout(timeout);
	timeout = setTimeout(function() {

jarrodhroberson / codex.json

Last active August 29, 2015 13:56

JSON Schemas

	{
	"$schema": "http://json-schema.org/schema#",
	"definitions": {
	"uuid": {
	"title": "uuid",
	"description": "UUID ( http://regex101.com/r/eJ7gN2 )",
	"type": "string",
	"minLength": 36,
	"maxLength": 36,
	"pattern": "^[0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{12}$"

jarrodhroberson / TestRandomzingIterator.java

Created February 6, 2014 05:15

Answer to a Stackoverflow question

	import org.junit.Test;

	import javax.annotation.Nonnull;
	import java.util.*;

	public class TestRandomzingIterator
	{
	@Test
	public void testRandomIteration()
	{

jarrodhroberson / StringFormat.js

Last active August 29, 2015 13:56

	// Only add if it doesn't exist yet!
	if (!String.prototype.format) {
	String.prototype.format = function() {
	var str = this.toString();
	if (!arguments.length)
	return str;
	var args = typeof arguments[0],
	args = (("string" == args \|\| "number" == args) ? arguments : arguments[0]);
	for (arg in args)
	str = str.replace(RegExp("\\{" + arg + "\\}", "gi"), args[arg]);

jarrodhroberson / TrustTheGarbageCollector.java

Created December 10, 2013 07:11

Trust the Garbage Collector

	import java.util.ArrayList;
	import java.util.List;
	import java.util.Random;

	/**
	* See what it looks like in JVisualVM
	* https://www.evernote.com/shard/s17/sh/430c9fd1-203a-45da-9194-b7cb20dbdf0f/4f67d91157f68db32e43badd9d806f1c/deep/0/Java-VisualVM.png
	*/
	public class TrustTheGarbageCollector
	{

jarrodhroberson / CellToolTip.js

Created December 3, 2013 03:44

ExtJS 4.x Grid Plugin to add ToolTips to each Cell in a Column with Process Config Function snippet for a Grid Panel.

	Ext.define('Ext.grid.plugin.CellToolTip', {
	extend: 'Ext.AbstractPlugin',
	alias: 'plugin.CellQTip',
	config: {
	debug: false
	},

	init: function(grid) {

	// You may not need the scope, but if you do, this binding will

jarrodhroberson / CalcMD5Worker.js

Created November 26, 2013 00:09

Reading a File in chunks with the HTML5 FileReader API and calculating MD5 hash codes of the contents with the spark-md5 library in a WebWorker.

	importScripts('spark-md5.min.js');

	function calcMD5(f) {
	var blobSlice = Blob.prototype.slice;
	var chunkSize = 2097152;
	var chunks = Math.ceil(f.size/chunkSize);
	var spark = new SparkMD5.ArrayBuffer();
	var currentChunk = 0;

	var fr = new FileReader();

jarrodhroberson / Question18818482.java

Created September 16, 2013 02:21

How to run a Thread for a specific amount of time.

	package com.stackoverflow.Q18818482;

	import java.util.ArrayList;
	import java.util.Iterator;
	import java.util.List;
	import java.util.Random;
	import java.util.concurrent.*;

	public class Question18818482
	{

jarrodhroberson / MyApp.java

Created September 10, 2013 15:12

Proper idiom to correctly implement the "Singleton" pattern in modern versions of Java.

	import javax.management.InstanceAlreadyExistsException;
	import javax.management.JMX;
	import javax.management.MBeanRegistrationException;
	import javax.management.MBeanServer;
	import javax.management.MalformedObjectNameException;
	import javax.management.NotCompliantMBeanException;
	import javax.management.ObjectName;
	import java.lang.management.ManagementFactory;

	public class MyApp

Jarrod Roberson jarrodhroberson