keithweaver

# For more info: http://docs.opencv.org/3.0-beta/doc/py_tutorials/py_gui/py_video_display/py_video_display.html
import cv2
import numpy as np

# Playing video from file:
# cap = cv2.VideoCapture('vtest.avi')
# Capturing video from webcam:
cap = cv2.VideoCapture(0)

currentFrame = 0

hfossli

import UIKit

public enum DisplayType {
    case unknown
    case iphone4
    case iphone5
    case iphone6
    case iphone6plus
    static let iphone7 = iphone6
    static let iphone7plus = iphone6plus

tiagopog

defmodule Account do
  defstruct name: nil, amount: 0

  def start(%Account{} = account) do
    spawn fn -> run(account) end
  end

  defp run(account) do
    account = receive do
      {:debit, value}  -> %{account | amount: account.amount - value}

tomysmile

type below:

brew update
brew install redis

To have launchd start redis now and restart at login:

brew services start redis

gunjanpatel

Revert the full commit

Sometimes you may want to undo a whole commit with all changes. Instead of going through all the changes manually, you can simply tell git to revert a commit, which does not even have to be the last one. Reverting a commit means to create a new commit that undoes all changes that were made in the bad commit. Just like above, the bad commit remains there, but it no longer affects the the current master and any future commits on top of it.

git revert {commit_id}

About History Rewriting

Delete the last commit

Deleting the last commit is the easiest case. Let's say we have a remote origin with branch master that currently points to commit dd61ab32. We want to remove the top commit. Translated to git terminology, we want to force the master branch of the origin remote repository to the parent of dd61ab32:

atika

let seconds = 86400*4 + 3600*2 + 65

print(String((seconds / 86400)) + " days")
print(String((seconds % 86400) / 3600) + " hours")
print(String((seconds % 3600) / 60) + " minutes")
print(String((seconds % 3600) % 60) + " seconds")

kus

// Fix iOS Audio Context by Blake Kus https://gist.github.com/kus/3f01d60569eeadefe3a1
// MIT license
(function() {
	window.AudioContext = window.AudioContext || window.webkitAudioContext;
	if (window.AudioContext) {
		window.audioContext = new window.AudioContext();
	}
	var fixAudioContext = function (e) {
		if (window.audioContext) {
			// Create empty buffer

stamaniorec

image = pygame.transform.scale(image, (desired_width,desired_height))

dannguyen

if !database: wget + grep

The Federal Aviation Administration is posting PDFs of the Section 333 exemptions that it grants, i.e. the exemptions for operators who want to fly drones commercially before the FAA finishes its rulemaking. A journalist wanted to look for exemptions granted to operators in a given U.S. state. But the FAA doesn't appear to have an easy-to-read data file to use and doesn't otherwise list exemptions by location of operator.

However, since their exemptions page is just one giant HTML table for listing the PDFs, we can just use wget to fetch all the PDFs, run pdftotext on each file, and then [grep](https://medium.com/@rualthanzauva/grep-was-a-private-command-of-m

juliengdt

// To check if a number is between a range, don't do
if number >=0 && number <= 100 {

}
// Use range and news operators instead :
if 0...100 ~= number {

}