so1tsuda

# calculating RSI (gives the same values as TradingView)
# https://stackoverflow.com/questions/20526414/relative-strength-index-in-python-pandas
def RSI(series, period=14):
    delta = series.diff().dropna()
    ups = delta * 0
    downs = ups.copy()
    ups[delta > 0] = delta[delta > 0]
    downs[delta < 0] = -delta[delta < 0]
    ups[ups.index[period-1]] = np.mean( ups[:period] ) #first value is sum of avg gains

Akagi201

Refs

• http://www.brendangregg.com/blog/2014-08-23/linux-perf-tools-linuxcon-na-2014.html
• https://news.ycombinator.com/item?id=8273481
• http://wiert.me/2014/03/19/reference-card-for-linux-performance-and-analysis-tools%EF%BB%BF-via-antony-peel-google/

staltz

The introduction to Reactive Programming you've been missing

(by @andrestaltz)

---

This tutorial as a series of videos

If you prefer to watch video tutorials with live-coding, then check out this series I recorded with the same contents as in this article: Egghead.io - Introduction to Reactive Programming.

---

neonichu

#!/bin/sh

#ID='A16FF353-8441-459E-A50C-B071F53F51B7' # Xcode 6.2
ID='992275C1-432A-4CF7-B659-D84ED6D42D3F' # Xcode 6.3

PLIST_BUDDY=/usr/libexec/PlistBuddy

function add_compatibility() {
  "$PLIST_BUDDY" -c "Add DVTPlugInCompatibilityUUIDs:10 string $2" \
    "$1/Contents/Info.plist"

kasuganosora

import socket
import threading
import os
import subprocess

Port = 123 #Shadowsocks 的端口
ShadowsocksPath = "/home/ss" #Shadowsocks 的路径

def CheckService():
	sk = socket.socket(socket.AF_INET, socket.SOCK_STREAM)

floriankugler

In order for this to work you need ffmpeg. I tried with version 1.2.1.

1) Play the video you want to download in the browser
2) Inspect the video element on the page
3) Copy the video url from the page source (something like http://devstreaming.apple.com/videos/wwdc/2013/.../101/ref.mov)
4) In this url replace "ref.mov" with "iphone_c.m3u8" (for 960x540 resolution) or "atp.m3u8" if you want more (probably 720p?)
5) Execute `ffmpeg -y -i http://devstreaming.apple.com/videos/wwdc/2013/.../101/iphone_c.m3u8 output.mp4`
6) There is your video :)

MohamedAlaa

tmux shortcuts & cheatsheet

start new:

tmux

start new with session name:

tmux new -s myname

scotttam

require "rubygems"
require "yajl"
require "openssl"
require "socket"

device_token = '39cac56f 986a0e66 3c4fd4f4 68df5598 024d2ca3 8b9f307c 741c180e 9fc30c62'
device_token = device_token.gsub(" ", "")
the_byte_token = [device_token].pack("H*")

file = File.open("ruby_the_byte_token", "wb")

mikeash

dispatch_block_t RecursiveBlock(void (^block)(dispatch_block_t recurse))
{
    // assuming ARC, so no explicit copy
    return ^{ block(RecursiveBlock(block)); };
}

typedef void (^OneParameterBlock)(id parameter);

OneParameterBlock RecursiveBlock1(void (^block)(OneParameterBlock recurse, id parameter))
{

dchest

// --------------------  CRSegmentedCell.h ------------------------------

#import <Cocoa/Cocoa.h>


@interface CRSegmentedCell : NSSegmentedCell {
	NSInteger highlightedSegment;
}
@property(assign) NSInteger highlightedSegment;
@end