A. M. ariesmcrae

💭

typescript, node.js, aws, java, go (golang)

Software Engineer: Python, Typescript, Java (certified, not keen), Go (not keen), AWS (certified), Kubernetes (certified)

ariesmcrae / genesis.json

Last active August 27, 2017 23:40

genesis.json

ariesmcrae / CsvError.java

Created September 10, 2017 09:03

Java POJO to JSON

	import com.fasterxml.jackson.core.JsonProcessingException;
	import com.fasterxml.jackson.databind.ObjectMapper;
	import lombok.Getter;
	import java.util.ArrayList;
	import java.util.List;


	@Getter
	public class CsvError {
	private String filename;

ariesmcrae / CsvValidator.java

Last active April 20, 2018 12:16

Validates the number expected commas in a CSV

	/**
	* Validate row of csv to see if it has the correct number of commas.
	* @param input The csv row to be evaluated.
	* @param expectedNumberOfCommas The expected number of commas in the csv row.
	*/
	public static void validateLine(String input, int expectedNumberOfCommas) {
	// Example input: [email protected],Male,21

	// Check that there are 2 commas in the input:
	// regex = ^([^,],){2}[^,]$

ariesmcrae / .gitignore

Last active October 7, 2017 09:00

.gitignore

ariesmcrae / MainBuldingStreams.java

Last active February 22, 2019 02:21

Arrays.asList vs Stream.Of

	package com.ariesmcrae.streams;

	import java.util.Arrays;
	import java.util.List;
	import java.util.stream.Stream;

	public class MainBuldingStreams {

	public static void main(String[] args) {
	// first way

ariesmcrae / .dockerignore

Last active October 28, 2017 05:21

ariesmcrae / Dockerfile

Last active October 29, 2017 23:09

Dockerfile sample for React and yarn. Modifying a React file from your laptop would sync them into the running container.

	FROM node:8.8.1-alpine

	# Make less message noise during docker build
	#ENV NPM_CONFIG_LOGLEVEL warn

	ARG app_env
	ENV APP_ENV $app_env

	# All subsequent commands will now be run from inside of this folder
	RUN mkdir -p /usr/app/src

ariesmcrae / CombinedStreams.java

Last active February 22, 2019 01:51

Combine list and array into a comma separated value to produce a regex pattern

	Stream<String> states = Stream.of("NSW", "VIC", "SA", "WA", "ACT", "QLD", "TAS", "NT");
	Stream<String> additionalStates = {"AUCKLAND", "CHRISTCHURCH"};
	List<String> combinedStates = Stream.concat(states, additionalStates).collect(Collectors.toList());

	String regexPattern = "\\A(" + StringUtils.join(combinedStates, "\|") + ")\\z";

	// \A(NSW\|VIC\|SA\|WA\|ACT\|QLD\|TAS\|NT\|SPACE)\z

ariesmcrae / Main.java

Created January 27, 2018 12:21

Java: Return sensible default and avoid NullPointerException in deep hierarchical object tree

	import java.util.Optional;

	public class Main {

	public static void main (String[] args) {
	Apple apple = new Apple();
	Banana banana = new Banana();
	apple.setBanana(banana);

	Coconut coconut = new Coconut();

ariesmcrae / Main.java

Last active March 28, 2019 05:37

Optional nullable

	package com.ariesmcrae.combination.service;

	import java.util.Arrays;
	import java.util.Collections;
	import java.util.List;
	import java.util.Optional;
	import java.util.stream.Collectors;

	public class Main {