mezis

SELECT id,state,command,time,left(replace(info,'\n','<lf>'),120)
FROM information_schema.processlist
WHERE command <> 'Sleep' 
AND info NOT LIKE '%PROCESSLIST%'
ORDER BY time DESC LIMIT 50;

peterc

require 'stringio'
require 'timeout'

class Object
  def methods_returning(expected, *args, &blk)
    old_stdout = $>
    $> = StringIO.new

    methods.select do |meth|
      Timeout::timeout(1) { dup.public_send(meth, *args, &blk) == expected rescue false } rescue false

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.

---

syon

source "https://rubygems.org"

gem "sinatra"
gem "haml"
gem "rsvg2"

bradfrost

Answering the Front-end developer JavaScript interview questions to the best of my ability.

• Explain event delegation

Sometimes you need to delegate events to things.

• Explain how this works in JavaScript

This references the object or "thing" defined elsewhere. It's like "hey, thing I defined elsewhere, I'm talkin' to you."

• Explain how prototypal inheritance works.

zxbodya

Observable React elements with RxJS

Note: if you want to skip history behind this, and just looking for final result see: rx-react-container

When I just started using RxJS with React, I was subscribing to observables in componentDidMount and disposing subscriptions at componentWillUnmount.

But, soon I realised that it is not fun to do all that subscriptions(that are just updating property in component state) manually, and written mixin for this...

Later I have rewritten it as "high order component" and added possibility to pass also obsarvers that will receive events from component.

ohanhi

Learning FP the hard way: Experiences on the Elm language

by Ossi Hanhinen, @ohanhi

with the support of Futurice 💚.

Licensed under CC BY 4.0.

Editorial note

AlexMax

Setting up RetroArch on a Raspberry Pi

I just put the finishing touches on my Raspberry Pi 3 emulation machine running RetroArch. I was not a huge fan of RetroPie due to the reliance on Emulation Station - more moving parts meant that there were more things that could potentially break. I just wanted something that would run raw RetroArch, no frills.

This tutorial is mostly recreated from memory and was most recently tested with a Raspberry Pi 3 running Raspbian Stretch and RetroArch 1.7.7. If there is a mistake or a broken link, PLEASE message me and I will fix it.

Step 1: Install Raspbian

I used Raspbian Stretch Lite from this page. Write the image to your SD card using something like Win32 Disk Imager, or if you're using OSX/Linux follow a tutorial on how to write the image using dd.

staltz

# Name it whatever you want. I like `y` because in my keyboard layout it's close to `;`
function y() {
    previous=$?
    if [ $previous -eq 0 ]; then
        osascript -e "display notification \"Done\" with title \"Terminal Task\"" && say "it is done";
    else
        osascript -e "display notification \"Failed\" with title \"Terminal Task\"" && say "it went to the trees";
    fi
}

haircut

Install and use pip on macOS without sudo / admin access

Most recently tested on macOS Sierra (10.12.6)

1. Download the installation script; curl https://bootstrap.pypa.io/get-pip.py -o ~/Downloads/get-pip.py
2. Run the installation, appending the --user flag; python ~/Downloads/get-pip.py --user. pip will be installed to ~/Library/Python/2.7/bin/pip
3. Make sure ~/Library/Python/2.7/bin is in your $PATH. For bash users, edit the PATH= line in ~/.bashrc to append the local Python path; ie. PATH=$PATH:~/Library/Python/2.7/bin. Apply the changes, source ~/.bashrc.
4. Use pip! Remember to append --user when installing modules; ie. pip install <package_name> --user

Note