Skip to content

Instantly share code, notes, and snippets.

View alexander480's full-sized avatar
🎯
Focusing

Alexander Lester alexander480

🎯
Focusing
View GitHub Profile
//: Playground - noun: a place where people can play
//: Binary gap solution for https://codility.com/programmers/task/binary_gap/
import UIKit
// use unsigned
func binary_gap(_ number: UInt) -> UInt {
var max_gap: UInt = 0
var current_gap: UInt = 0
@oleq
oleq / _README.md
Last active September 7, 2024 13:11
A2DP audio streaming using Raspberry PI (Raspbian Jessie)

What is this all about?

This tutorial will turn your Raspberry PI into a simple Bluetooth audio receiver, which plays music through connected speakers. It's like a regular car audio system, but it can be used anywhere and it's a good value.

   Audio source (i.e. smartphone) 
                |
                v
 (((  Wireless Bluetooth Channel  )))
 |
@superjamie
superjamie / raspberry-pi-vpn-router.md
Last active December 29, 2024 07:04
Raspberry Pi VPN Router

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:

@etes
etes / pi_mount_usb.md
Last active August 13, 2025 22:27
How to setup mount / auto-mount USB Hard Drive on Raspberry Pi

How to setup mount / auto-mount USB Hard Drive on Raspberry Pi

Follow the simple steps in the order mentioned below to have your USB drive mounted on your Raspberry Pi every time you boot it.

These steps are required especially if your are setting up a Samba share, or a 24x7 torrent downloader, or alike where your Raspberry Pi must have your external storage already mounted and ready for access by the services / daemons.

Step 0. Plug in your USB HDD / Drive to Raspberry Pi If you are using a NTFS formatted drive, install the following

@kshiteesh
kshiteesh / urlsafari
Last active July 17, 2025 04:59
This AppleScript saves all the tabs open in all Safari windows to a Markdown file.
(*
Export All Safari Tabs in All Open Windows to a Markdown File
July 13, 2015
// SCRIPT PAGE
http://hegde.me/urlsafari
// ORIGINAL SCRIPT ON WHICH THIS SCRIPT IS BUILT
http://veritrope.com/code/export-all-safari-tabs-to-a-text-file
//
// SimpleScrollingStack.swift
// A super-simple demo of a scrolling UIStackView in iOS 9
//
// Created by Paul Hudson on 10/06/2015.
// Learn Swift at www.hackingwithswift.com
// @twostraws
//
import UIKit
@JadenGeller
JadenGeller / Matrix Examples.swift
Last active August 10, 2023 10:03
Matrices in Swift
// Numerical matrix examples
let x: Matrix = [[10, 9, 8], [3, 2, 1]]
let y: Matrix = [[1, 2, 3], [4, 5, 6]]
let z: Matrix = [[1, 2], [3, 4], [5, 6]]
x + y // [[11, 11, 11], [7, 7, 7]]
x * y // [[10, 18, 24], [12, 10, 6]]
2 * x // [[20, 18, 16], [6, 4, 2]]
y ** z // [[22, 28], [49, 64]]
@spikedrba
spikedrba / pmd.py
Last active August 13, 2021 17:42
RPi Motion detection with picamera python lib
#!/usr/bin/env python
# -*- coding: utf-8 -*-
# This script was originally created by by killagreg î Thu Dec 18, 2014 7:53 am
# see http://www.raspberrypi.org/forums/viewtopic.php?p=656881#p656881
# This script implements a motion capture surveillance cam for raspberry pi using picam
# and is based on the picamera python library.
# It uses the "motion vectors" magnitude of the h264 hw-encoder to detect motion activity.
@rmondello
rmondello / gist:b933231b1fcc83a7db0b
Last active February 5, 2025 03:03
Exporting (iCloud) Keychain and Safari credentials to a CSV file

Exporting (iCloud) Keychain and Safari credentials to a CSV file

Update (October 2021)

Exporting password + one-time code data from iCloud Keychain is now officially supported in macOS Monterey and Safari 15 (for Monterey, Big Sur, and Catalina). You can access it in the Password Manager’s “gear” icon (System Preferences > Passwords on Monterey, and Safari > Passwords everywhere else), or via the File > Export > Passwords... menu item). You shouldn't need to hack up your own exporter anymore.

Original, Obsolete Content (2014)

After my dad died, I wanted to be able to have access any of his online accounts going forward. My dad was a Safari user and used iCloud Keychain to sync his credentials across his devices. I don’t want to have to keep an OS X user account around just to access his accounts, so I wanted to export his credentials to a portable file.

@dconnolly
dconnolly / README.md
Last active August 5, 2025 19:21
All 100 Chromecast background images that are rotated through, linked to their original locations on Google hosting. Links to 2560 width versions, where available.