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onDrop = (acceptedFiles, rejectedFiles) => {
  const file = acceptedFiles.find(f => f)
  const i = new Image()

  i.onload = () => {
    let reader = new FileReader()
    reader.readAsDataURL(file)
    reader.onload = () => {
      console.log({
        src: file.preview,

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stats = Sidekiq::Stats.new

stats.queues

stats.enqueued

stats.processed

stats.failed

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#!/bin/bash

# Bash script to install latest version of ffmpeg and its dependencies on Ubuntu 12.04 or 14.04
# Inspired from https://gist.github.com/faleev/3435377

# Remove any existing packages:
sudo apt-get -y remove ffmpeg x264 libav-tools libvpx-dev libx264-dev

# Get the dependencies (Ubuntu Server or headless users):
sudo apt-get update

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On Mac OSX

copy selected part: visually select text(type v or V in normal mode) and type :w !pbcopy

copy the whole file :%w !pbcopy

paste from the clipboard :r !pbpaste

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class User < ActiveRecord::Base

  # keep the default scope first (if any)

  default_scope { where(active: true) }

  # constants come up next

  COLORS = %w(red green blue)

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HTTP status code symbols for Rails

Thanks to Cody Fauser for this list of HTTP responce codes and their Ruby on Rails symbol mappings.

Status Code Symbol
1xx Informational
100 :continue
101 :switching_protocols
102 :processing

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Ruby on Rails Tutorial Exercise Answers

Chapter 1

Section 1.1.1

1. https://rubygems.org hosts the Ruby gem for Ruby on Rails.
2. The current stable version number of Rails is 5.1.4, with 5.2.0.beta2 being the overall latest version.
3. As of this writing, Ruby on Rails has been downloaded 118,011,892 across all versions.

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git filter-branch --tree-filter 'rm -rf node_modules' --prune-empty HEAD
git for-each-ref --format="%(refname)" refs/original/ | xargs -n 1 git update-ref -d
echo node_modules/ >> .gitignore
git add .gitignore
git commit -m 'Removing node_modules from git history'
git gc
git push origin master --force

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AWS Architect Associate - Reminder

EC2

General purpose SSD have a maximum of 10.000 IOPS.

It is possible to detach non-root volume from running EC2 instance.

An EC2 placement group is used to determin how far are instances placed between each other. In cluster mode, they will be placed to reduce the latency inside a single AZ. In spread mode, they will be placed on different underlying hardware (and potentially in different AZ).

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call "9263262904", {:callerID => 'sip:21588734@sip.tropo.net'}
ask "Who would you like to call? Just say Joe or John", {
		:choices => "Joe, John",
		:mode => "speech",
		:recognizer => "en-PH",
		:minConfidence => 0.6,
		:onChoice => lambda { |event| say "You said" + event.value},
		:onBadChoice => lambda { |event| say "I'm sorry, I didn't understand what you said."},
		:onTimeout => lambda { |event| say "I'm sorry, I didn't hear anything"},
		:onHangup => lambda { |event| log "Caller disconnected"}