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Shourai / Mount SD Cards within VirtualBox on Mac OS X
Created Nov 2, 2018
Mount SD Cards within VirtualBox on Mac OS X
View Mount SD Cards within VirtualBox on Mac OS X
Mount SD Cards within VirtualBox on Mac OS X
Sometimes you need to mount your SD cards inside a VirtualBox machine to work with the files on the card. Working with the Raspberry Pi SD card on Mac OS X is an example for this.
My Raspberry Pi runs on Linux with some version of the EXT file system. While there is some support for this on Mac OS X, the available solutions have a lot of limitations, especially when it comes to write support on EXT file systems. As I do not have an USB keyboard, I sometimes need to mount the filesystem on another system to fix a startup problem when some of my experiments go wrong.
VirtualBox in theory allows for passing the internal card reader of the MacBooks to the virtual machine. Unfortunately, this does not work for me (and it seems for many other people).
Mahedi-61 / cuda_11.2_installation_on_Ubuntu_20.04
Last active Sep 25, 2021
CUDA 11.2 Installation on Ubuntu 20.04
View cuda_11.2_installation_on_Ubuntu_20.04
## This gist contains instructions about cuda v11.2 and cudnn8.1 installation in Ubuntu 20.04 for Pytorch 1.8
### steps ####
# verify the system has a cuda-capable gpu
# download and install the nvidia cuda toolkit and cudnn
# setup environmental variables
# verify the installation
lattner /
Last active Sep 10, 2021 — forked from oleganza/
Concrete proposal for async semantics in Swift

Async/Await for Swift


Modern Cocoa development involves a lot of asynchronous programming using closures and completion handlers, but these APIs are hard to use. This gets particularly problematic when many asynchronous operations are used, error handling is required, or control flow between asynchronous calls gets complicated. This proposal describes a language extension to make this a lot more natural and less error prone.

This paper introduces a first class Coroutine model to Swift. Functions can opt into to being async, allowing the programmer to compose complex logic involving asynchronous operations, leaving the compiler in charge of producing the necessary closures and state machines to implement that logic.

sjoerdvisscher / minimal.swift
Created Jun 28, 2017
Using Decodable to generate a minimal value
View minimal.swift
struct MinimalDecoder : Decoder {
var codingPath = [CodingKey?]()
var userInfo = [CodingUserInfoKey : Any]()
public func container<Key>(keyedBy type: Key.Type) throws -> KeyedDecodingContainer<Key> {
return KeyedDecodingContainer(MinimalKeyedDecodingContainer<Key>(decoder: self))
public func unkeyedContainer() throws -> UnkeyedDecodingContainer {
return DecodingContainer(decoder: self)
Catfish-Man / lockcachecontention.m
Last active Jul 5, 2017
Benchmark showing how locks sharing a cache line will contend with each other
View lockcachecontention.m
#import <Foundation/Foundation.h>
#import <time.h>
#import <os/lock.h>
#define ITERS 2000
#define NSEC_PER_ITER(time) (((double)time * (double)NSEC_PER_SEC) / (double)ITERS)
#define TEST(body, name) do {\
start = [NSDate date];\
for (int i = 0; i < ITERS; i++) {\
alfredkrohmer /
Created Nov 23, 2016
XBox One Wireless Controller Protocol

Physical layer

The dongle itself is sending out data using 802.11a (5 GHz WiFi) with OFDM and 6 Mbit/s data rate:

Radiotap Header v0, Length 38
    Header revision: 0
    Header pad: 0
    Header length: 38
    Present flags
Nihisil / jail.local
Last active Feb 1, 2021
Send notifications to the Slack from fail2ban
View jail.local
action_with_slack_notification = %(banaction)s[name=%(__name__)s, port="%(port)$
action = %(action_with_slack_notification)s
apolloclark / Twitter API with Curl
Last active Apr 29, 2021
Twitter API with Curl
View Twitter API with Curl
# create an account, create an app
# @see
# retrieve the access tokens
# @see
# create the file ~/twitter_api
nano ~/twitter_api
Authorization: OAuth oauth_consumer_key="XXXXXX", oauth_nonce="11111111", oauth_signature="XXXXXX", oauth_signature_method="HMAC-SHA1", oauth_timestamp="1450728725", oauth_token="99999-XXXXXX", oauth_version="1.0"
felix-schwarz /
Last active Aug 24, 2021 — forked from steipete/openssl-build.h
Updated script that builds OpenSSL for OS X, iOS and tvOS. Bitcode enabled for iOS, tvOS. Updated to build for tvOS, use the latest SDKs, skip installing man pages (to save time), download the OpenSSL source over HTTPS, patch OpenSSL for tvOS to not use fork(). Currently requires Xcode7.1b or later (for the tvOS SDK).
# This script downloads and builds the iOS, tvOS and Mac openSSL libraries with Bitcode enabled
# Credits:
# Peter Steinberger, PSPDFKit GmbH, @steipete.
# Felix Schwarz, IOSPIRIT GmbH, @felix_schwarz.
0xced / MoviePlayerControllerDoneButton.h
Created Dec 17, 2014
Access the "Done" button of a MPMoviePlayerController
View MoviePlayerControllerDoneButton.h
#import <MediaPlayer/MediaPlayer.h>
* Example usage:
* UIButton *doneButton = MoviePlayerControllerDoneButton(moviePlayerViewController.moviePlayer);
* [doneButton setTitle:@"✖" forState:UIControlStateNormal];
* doneButton.titleLabel.font = [UIFont systemFontOfSize:30];
extern UIButton * MoviePlayerControllerDoneButton(MPMoviePlayerController *moviePlayerController);