Michael Jo mjtoolbox

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mjtoolbox / ReduceMemoryConsumption.py

Created January 13, 2022 17:16

	def reduce_mem_usage(df):
	start_mem_usg = df.memory_usage().sum() / 1024**2
	print("Memory usage of properties dataframe is :",start_mem_usg," MB")
	NAlist = [] # Keeps track of columns that have missing values filled in.
	for col in df.columns:
	if df[col].dtype != object and df[col].dtype != 'datetime64[ns]': # Exclude strings and dates

	# Print current column type
	print("******************************")
	print("Column: ",col)

mjtoolbox / seven-segment

Created April 21, 2017 14:03

Arduino seven segment control

	const int latchPin = 12;//Pin connected to ST_CP of 74HC595
	const int clockPin = 8;//Pin connected to SH_CP of 74HC595
	const int dataPin = 11; //Pin connected to DS of 74HC595
	//display 0,1,2,3,4,5,6,7,8,9,A,b,C,d,E,F
	int datArray[16] = {252, 96, 218, 242, 102, 182, 190, 224, 254, 246, 238, 62, 156, 122, 158, 142};
	void setup ()
	{
	//set pins to output
	pinMode(latchPin,OUTPUT);
	pinMode(clockPin,OUTPUT);

mjtoolbox / StudentWCClient.java

Created March 31, 2014 04:50

RestWebServiceTest Client code

	package com.mjtoolbox.wsclient;

	import java.io.IOException;
	import java.io.InputStream;
	import java.util.List;
	import java.util.Properties;

	import javax.ws.rs.client.Client;
	import javax.ws.rs.client.ClientBuilder;
	import javax.ws.rs.client.Entity;

mjtoolbox / StudentResource.java

Created March 31, 2014 04:42

RESTful WebService using RestEasy

	package com.mjtoolbox.ws;

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

	import javax.ws.rs.GET;
	import javax.ws.rs.HeaderParam;
	import javax.ws.rs.PUT;
	import javax.ws.rs.Path;
	import javax.ws.rs.PathParam;

mjtoolbox / web.xml

Created March 31, 2014 04:30

RestWebServiceTest web.xml

	<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://xmlns.jcp.org/xml/ns/javaee" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd" id="WebApp_ID" version="3.1">
	<display-name>RestWebServiceTest</display-name>
	<welcome-file-list>
	<welcome-file>index.html</welcome-file>
	<welcome-file>index.htm</welcome-file>
	<welcome-file>index.jsp</welcome-file>
	<welcome-file>default.html</welcome-file>
	<welcome-file>default.htm</welcome-file>
	<welcome-file>default.jsp</welcome-file>
	</welcome-file-list>

mjtoolbox / pom.xml

Created March 31, 2014 04:11

RestWebServiceTest project pom.xml

	<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
	<modelVersion>4.0.0</modelVersion>
	<groupId>com.mjtoolbox.ws.test</groupId>
	<artifactId>RestWebServiceTest</artifactId>
	<packaging>war</packaging>
	<version>0.0.1-SNAPSHOT</version>
	<name>RestWebServiceTest</name>
	<properties>
	<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>

mjtoolbox / Cygwin0711

Created July 12, 2013 05:51

EC2 Instance Startup Engineering Cygwin output for HW3 preparation


	msjo@msjo-PC ~
	$ pwd
	/home/msjo

	msjo@msjo-PC ~
	$ ls
	demo.txt genome index.html market-research.js out1.txt subset.ptt.00 subset.ptt.03
	errs.txt genome.tar locs market-research-wrapper.js out2.txt subset.ptt.01 subset.ptt.04
	genes grader.js market-research.csv mjtoolbox-aws-ubuntu-startup-eng.pem out3.txt subset.ptt.02 test.txt

mjtoolbox / home.xhtml

Created June 29, 2013 18:08

Shiro-Face Tag library and JSF page for usage. http://mjtoolbox.wordpress.com/2012/09/25/custom-tags-in-jsf-2-0-for-shiro-authorization/

	<?xml version="1.0" encoding="ISO-8859-1" ?>
	<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
	<html xmlns="http://www.w3.org/1999/xhtml"
	xmlns:f="http://java.sun.com/jsf/core"
	xmlns:h="http://java.sun.com/jsf/html"
	xmlns:ui="http://java.sun.com/jsf/facelets"
	xmlns:shiro="http://xproject.flightCenter/tag">
	<h:head>
	<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1" />
	<link rel="stylesheet" type="text/css" href="../css/flight.css"

mjtoolbox / gist:5538527

Created May 8, 2013 05:57

Simple Servlet using JEE7 JsonObjectBuilder

	package mypackage;

	import java.io.IOException;
	import java.io.PrintWriter;
	import java.io.StringWriter;

	import javax.json.Json;
	import javax.json.JsonObject;
	import javax.json.JsonObjectBuilder;
	import javax.json.JsonWriter;

mjtoolbox / Tree Traversal

Created January 12, 2013 17:22

Tree Traversal : InOrder, PreOrder, PostOrder using recursion and non-recursion for XProject. Non-recursive PostOrder is not included.

	package tree;

	public class TreeTraversal
	{

	/**
	* @param args
	*/
	public static void main(String[] args)
	{