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#!/usr/bin/env bash

for f in *
  do qpdf --password=THE_PASSWORD --decrypt --replace-input $f;
done

# brew install qpdf
# for executable file run: chmod u+x decrypt-pdf.sh

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Timer App

Please create an app for managing timed tasks.

1. The user can input a text and click Add
2. A new task is added with the title, and 00:00 time, and a play button.
3. Clicking Play will play this task: the timer will start running, and the icon will change to a pause icon. Also - any other running task will be paused.
4. Clicking Pause will pause the task.
5. The total time is always updated.

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/* variation on https://medium.com/@DanHomola/react-higher-order-components-in-typescript-made-simple-6f9b55691af1 */
import * as React from 'react'
import { wrapDisplayName } from 'recompose'

// Props you want the resulting component to take (besides the props of the wrapped component)
interface ExternalProps {}

// Props the HOC adds to the wrapped component
export interface InjectedProps {}

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#!/usr/bin/python
# -*- coding: utf-8 -*-

# Python script to find the largest files in a git repository.
# The general method is based on the script in this blog post:
# http://stubbisms.wordpress.com/2009/07/10/git-script-to-show-largest-pack-objects-and-trim-your-waist-line/
#
# The above script worked for me, but was very slow on my 11GB repository. This version has a bunch
# of changes to speed things up to a more reasonable time. It takes less than a minute on repos with 250K objects.
#

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Raspberry Pi VPN Router

This is a quick-and-dirty guide to setting up a Raspberry Pi as a "router on a stick" to PrivateInternetAccess VPN.

Requirements

Install Raspbian Jessie (2016-05-27-raspbian-jessie.img) to your Pi's sdcard.

Use the Raspberry Pi Configuration tool or sudo raspi-config to:

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<!-- Use YQL to convert XML to JSON in your sleep -->
<!-- Introduced in YDN blog post: http://developer.yahoo.net/blog/archives/2010/03/yql_code_samples_yql_is_easy_to_use.html -->

<script src="http://yui.yahooapis.com/3.0.0/build/yui/yui-min.js"></script>
<ul>UN Headlines:</ul>
<script>
var Y = new YUI();
function handleResponse ( json ) {
    var items = json.query.results.item;
    for ( var i = 0; i < items.length; i++ ) {

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/*
 * This plugin makes sure karma doesn't run any specs when there's a
 * compilation error in a module by including a module even if the module has errors.
 *
 * Webpack's normal behaviour is to not include modules which have errors,
 * which causes Karma to run all the tests without the failed spec.
 *
 * Some links to where this magic actually happens in Webpack:
 *

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var webpackConfig = {
    plugins: [
        // Plugin to show any webpack warnings and prevent tests from running
        function () {
            this.plugin("done", function (stats) {
                if (stats.compilation.warnings.length) {
                    // Log each of the warnings
                    stats.compilation.warnings.forEach(function (warning) {
                        console.log(warning.message || warning);
                    });

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Table of Contents generated with DocToc

• FrontEnd Masters - ES6 notes
  • Proper Tail Call (PTC)
  • Function Hoisting
  • Variables
    • Temporal Dead Zone
• Rest Parameters

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What forces layout / reflow

All of the below properties or methods, when requested/called in JavaScript, will trigger the browser to synchronously calculate the style and layout. This is also called reflow or layout thrashing, and is common performance bottleneck.

Element

Box metrics

• elem.offsetLeft, elem.offsetTop, elem.offsetWidth, elem.offsetHeight, elem.offsetParent
• elem.clientLeft, elem.clientTop, elem.clientWidth, elem.clientHeight
• elem.getClientRects(), elem.getBoundingClientRect()