oscarychen

CREATE EXTENSION ltree;

CREATE TABLE test (path ltree);


--                         Top
--                      /   |  \
--              Science Hobbies Collections
--                  /       |              \
--         Astronomy   Amateurs_Astronomy Pictures

myshov

console.log(1);
(_ => console.log(2))();
eval('console.log(3);');
console.log.call(null, 4);
console.log.apply(null, [5]);
new Function('console.log(6)')();
Reflect.apply(console.log, null, [7])
Reflect.construct(function(){console.log(8)}, []);
Function.prototype.apply.call(console.log, null, [9]);
Function.prototype.call.call(console.log, null, 10);

amysimmons

#Understanding closures, callbacks and promises

For a code newbie like myself, callbacks, closures and promises are scary JavaScript concepts.

10 months into my full-time dev career, and I would struggle to explain these words to a peer.

So I decided it was time to face my fears, and try to get my head around each concept.

Here are the notes from my initial reading. I'll continue to refine them as my understanding improves.

peterjmag

A bit of context

This is a companion Gist for a talk that I gave at React Berlin in April 2015. The fine folks at Bitcrowd recorded all three of the evening's talks, so you can watch mine at https://www.youtube.com/watch?v=9ArhJiMGVDc.

Hi there!

React Berlin - Meetup #1

Peter Magenheimer (@peterjmag)
I'm a front end developer at ResearchGate. And yes, we're hiring.

ryanflorence

Folder Structure

Please note

While this gist has been shared and followed for years, I regret not giving more background. It was originally a gist for the engineering org I was in, not a "general suggestion" for any React app.

Typically I avoid folders altogether. Heck, I even avoid new files. If I can build an app with one 2000 line file I will. New files and folders are a pain.

erineland

#!/bin/bash
    # Script to export Safari's reading list into a text file, then import this into Pocket or Evernote (or any service with a "email in content" feature).
    
    # First take all of Safari's Reading List items and place them in a text file.
    /usr/bin/plutil -convert xml1 -o - ~/Library/Safari/Bookmarks.plist | grep -E  -o '<string>http[s]{0,1}://.*</string>' | grep -v icloud | sed -E 's/<\/{0,1}string>//g' > readinglistlinksfromsafari.txt
    
    # Now loop over each of those URls within that text file and add them to pocket.
    while IFS= read -r line
    do
        echo $line

estum

# = Kernel#switch
# Provides alternative switch-case syntax.
#
#     # support methods:
#     value = []
#     switch value do
#       on empty?: -> { "none" }
#       on one?:   -> { "one" }
#       on many?:  -> { "many" }
#     end

willurd

Each of these commands will run an ad hoc http static server in your current (or specified) directory, available at http://localhost:8000. Use this power wisely.

Discussion on reddit.

Python 2.x

$ python -m SimpleHTTPServer 8000

jhjguxin

#No such file to load -- devise/confirmations_controller
#resque worker devise not eager loading

require File.expand_path('../config/application', __FILE__)
require 'rake/dsl_definition'
require 'resque/tasks'

Askjane::Application.load_tasks

task "resque:setup" => :environment do

mattgorecki

require 'rubygems'
require 'snmp'
require 'carrot'
require 'json'

q = Carrot.queue('traps', :durable => true)

m = SNMP::TrapListener.new(:Port => 162, :Community => 'snmpcommunity') do |manager|
    puts "trapd.rb started..."
    manager.on_trap_default do |trap|