mankind

http://stackoverflow.com/questions/22667401/postgres-json-data-type-rails-query
http://stackoverflow.com/questions/40702813/query-on-postgres-json-array-field-in-rails

#payload: [{"kind"=>"person"}]
Segment.where("payload @> ?", [{kind: "person"}].to_json)

#data: {"interest"=>["music", "movies", "programming"]}
Segment.where("data @> ?",  {"interest": ["music", "movies", "programming"]}.to_json)
Segment.where("data #>> '{interest, 1}' = 'movies' ")
Segment.where("jsonb_array_length(data->'interest') > 1")

sobrinho

# Robust JSON output for active record errors
#
# See https://groups.google.com/forum/#!topic/rubyonrails-core/hxgX6D9s2uM
module ActiveRecord
  module AutosaveAssociation
    def validate_collection_association(reflection)
      if association = association_instance_get(reflection.name)
        if records = associated_records_to_validate_or_save(association, new_record?, reflection.options[:autosave])
          records.each_with_index do |record, index|
            association_valid?(reflection, record, index)

carlynorama

void generateFiles() {
//derived from code found at http://forum.arduino.cc/index.php?topic=57460.0
  String fileName = String();
  String message = String();
  unsigned int filenumber = 1;
  while(!filenumber==0) {
    fileName = "file_";
    fileName += filenumber;
    fileName += ".txt";
    message = fileName;

tedmiston

/*
In the node.js intro tutorial (http://nodejs.org/), they show a basic tcp 
server, but for some reason omit a client connecting to it.  I added an 
example at the bottom.

Save the following server in example.js:
*/

var net = require('net');

christianroman

import cv2.cv as cv
import tesseract
gray = cv.LoadImage('captcha.jpeg', cv.CV_LOAD_IMAGE_GRAYSCALE)
cv.Threshold(gray, gray, 231, 255, cv.CV_THRESH_BINARY)
api = tesseract.TessBaseAPI()
api.Init(".","eng",tesseract.OEM_DEFAULT)
api.SetVariable("tessedit_char_whitelist", "0123456789abcdefghijklmnopqrstuvwxyz")
api.SetPageSegMode(tesseract.PSM_SINGLE_WORD)
tesseract.SetCvImage(gray,api)
print api.GetUTF8Text()

ryanjbonnell

cd /usr/local/src
curl -O http://lynx.isc.org/lynx2.8.7/lynx2.8.7.tar.gz
tar -xzvf lynx2.8.7.tar.gz
cd lynx2-8-7
./configure --mandir=/usr/share/man
make
sudo make install

mkelley33

(($) ->
  $.fn.clearForm = ->
    @find(":input").each ->
      switch @type
        when "password", "select-multiple"
      , "select-one"
      , "text"
      , "textarea"
          $(this).val ""
        when "radio", "checkbox"

lucasdavila

<%= simple_form_for @product do |f| %>
  <%= f.simple_fields_for :attributes do |d| %>

    <% f.object.attributes.try(:each) do |key, value| %>
      <%= d.input key, :input_html => {:value => value } %>
    <% end %>

  <% end %>
<% end %>

ryanlecompte

# First the end result of what we want:

class Foo
  before_hook :whoa
  before_hook :amazing

  def test
    puts "This is kinda cool!"
  end

creationix

// Load the TCP Library
net = require('net');

// Keep track of the chat clients
var clients = [];

// Start a TCP Server
net.createServer(function (socket) {

  // Identify this client