erineland

A simple utility (node module) that can be used to order a list of objects that have both name and rank, as well as finding the average rank.

See tests for examples like the one below:

const rankingTool = require('../src/object-ranking-tool');

const rankObjects = [
    {
 name: 'The Battle of The Bastards',

erineland

This is a small utility designed to take an array of people objects, each with name, age and gender as well as an optional set of rules for filtering those objects, and return the filtered list, grouped by the genders of the people.

By default, if no custom rules are passed in, only people between the ages of 30 and 40 will be returned.

Run and read the tests to see different inputs and outputs.

Here's an example:

const peopleFilter = require('../src/people-filter');

erineland

// I wrote this in  a local IDE (VSCode FTW) so that I could test it before writing it here, as there is limited tooling
// Only maps through each array once, and then the object (dictionary of elements and locations) once.
// Hence, this has linear O(n) time complexity and and O(n) space complexity. This is OK, could be better.
const reconcileHelpers = (firstArray, secondArray) => {
    var elementLocations = {}; // empty dictionary for super fast O(1) lookups.

    const arrayParser = (element, arrayName) => {
        var existingLocations = elementLocations[element];
        if (existingLocations) {
            elementLocations[element].push(arrayName);

erineland

var express = require('express');
// Helper libraries are supplied if needed
// const _ = require('lodash')
// const r = require('ramda')
const router = express.Router()

// Same state uses the base rate on the weight;
// Different state shipments have a fixed 20% cost increase on top of the previous value (rate on weight);
// Packages can have distinct weight units, either pounds or kilograms.
// Weight needs to be validated on pounds, thus requiring conversion from kg;

erineland

For this code exercise I went with a simple recursive solution to drill down into each array element, compiling a master array of the individual elements, aiming for elegant code which is readable and functional and ready to ship as it has tests and was written in a TDD manner (as I try to do for all of my tests).

The tests give you examples of how you would run this tool/code for it's desired effect.

E.g.

const ArrayFlattenerTool = require('./array-flattener.js');
const flatArray = ArrayFlattenerTool([1, [1, [2, [3, 4]]], 5]);

erineland

// TODO: define polyfill for `Object.is(..)`
if (!Object.is || true) {
    Object.is = function(firstValue, secondValue) {

        // Take NaN into account
        if (typeof(firstValue) === 'number' && typeof(secondValue) === 'number') {
            if (firstValue.toString() === 'NaN' && secondValue.toString() === 'NaN') {
                return firstValue.toString() === 'NaN' && secondValue.toString() === 'NaN'
            }
        }

erineland

#!/bin/bash
brew upgrade imagemagick
convert -density 200 $1 -rotate 0.3 +noise Multiplicative -format pdf  -quality 85 -compress JPEG -colorspace gray $2

erineland

Studying for a Tech Interview Sucks, so Here's a Cheat Sheet to Help

This list is meant to be a both a quick guide and reference for further research into these topics. It's basically a summary of that comp sci course you never took or forgot about, so there's no way it can cover everything in depth. It also will be available as a gist on Github for everyone to edit and add to.

Data Structure Basics

###Array ####Definition:

• Stores data elements based on an sequential, most commonly 0 based, index.
• Based on tuples from set theory.

erineland

//To apply different styles nested tabs, you have to use the respective DOM positions
ion-nav-view {
  ion-tabs {
    /*Styling bottom nav bar */
    .tab-nav.tabs {
      background-color: $ygi-green !important;
      .tab-item-active {
        background-color: white !important;
        color: black !important;
      }

erineland

#!/bin/bash
    # Script to export Safari's reading list into a text file, then import this into Pocket or Evernote (or any service with a "email in content" feature).
    
    # First take all of Safari's Reading List items and place them in a text file.
    /usr/bin/plutil -convert xml1 -o - ~/Library/Safari/Bookmarks.plist | grep -E  -o '<string>http[s]{0,1}://.*</string>' | grep -v icloud | sed -E 's/<\/{0,1}string>//g' > readinglistlinksfromsafari.txt
    
    # Now loop over each of those URls within that text file and add them to pocket.
    while IFS= read -r line
    do
        echo $line