alastairmccormack

#!/usr/bin/env python
#
# Shows GOP structure of video file. Useful for checking suitability for HLS and DASH packaging.
# Example:
#
# $ iframe-probe.py myvideo.mp4
# GOP: IPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP 60 CLOSED
# GOP: IPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP 60 CLOSED
# GOP: IPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP 60 CLOSED
# GOP: IPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP 60 CLOSED

SaschaMoellering

def create_redis_cluster(region, infrastructure_name, security_groups, subnet_ids, availability_zones,
                         cache_node_type):

    cluster_name = "{0}-cache-cluster".format(infrastructure_name)
    replication_group = "{0}-rg".format(infrastructure_name)
    cluster_subnet = "{0}-cluster-subnet".format(infrastructure_name)

    print "Creating Redis cluster {0} using security groups {1} and subnet {2} in AZs {3} with cache node type {4}"\
        .format(cluster_name, security_groups, subnet_ids, availability_zones, cache_node_type)

mziwisky

OAUTH2

The Problem

I’m a web app that wants to allow other web apps access to my users’ information, but I want to ensure that the user says it’s ok.

The Solution

I can’t trust the other web apps, so I must interact with my users directly. I’ll let them know that the other app is trying to get their info, and ask whether they want to grant that permission. Oauth defines a way to initiate that permission verification from the other app’s site so that the user experience is smooth. If the user grants permission, I issue an AuthToken to the other app which it can use to make requests for that user's info.

Note on encryption

Oauth2 has nothing to do with encryption -- it relies upon SSL to keep things (like the client app’s shared_secret) secure.

hellerbarde

Latency numbers every programmer should know

L1 cache reference ......................... 0.5 ns
Branch mispredict ............................ 5 ns
L2 cache reference ........................... 7 ns
Mutex lock/unlock ........................... 25 ns
Main memory reference ...................... 100 ns             
Compress 1K bytes with Zippy ............. 3,000 ns  =   3 µs
Send 2K bytes over 1 Gbps network ....... 20,000 ns  =  20 µs
SSD random read ........................ 150,000 ns  = 150 µs

Read 1 MB sequentially from memory ..... 250,000 ns = 250 µs

datagrok

This article is now published on my website: Prefer Subshells for Context.

samnang

# Install Bash 4 using homebrew
brew install bash

# Or build it from source...
curl -O http://ftp.gnu.org/gnu/bash/bash-4.2.tar.gz
tar xzf bash-4.2.tar.gz
cd bash-4.2
./configure --prefix=/usr/local/bin && make && sudo make install

# Add the new shell to the list of legit shells

snit-ram

<?php

class ObjectIterator implements Iterator{
    protected $object;
    protected $reflectionObject;
    protected $properties;

    public function __construct( $object ){
        $this->object = $object;

stefl

mediainfo  -f /files/timecode/528006c9-33b0-4a89-9b94-c9bf7f6be2a9.mov | grep '^Delay.*: [0-9][0-9]:' | awk '{split($0,a,": "); print a[2]}'

joemccann

Note: You need to be on a Mac.

Note: This is purposely verbose. Yes, I know a lot of this can be simplified. Fork it and show me.

1. Install git
2. Open your terminal.
3. mkdir ~/Documents/phonegap_sencha
4. cd ~/Documents/phonegap_sencha
5. git clone https://github.com/phonegap/phonegap-iphone.git && cd phonegap-iphone
6. git reset --hard HEAD