Inviz

SELECT assert(generate_expression(
  '{"a": {"col": "abc"}}'), 
  'a = abc');
SELECT assert(generate_expression(
  '{"a": {"not": 2}}'),
  'a <> 2');
SELECT assert(generate_expression(
  '{"a": {"not": [{"gt": 2}, {"lt": 2}]}}'),
  'NOT (a > 2 AND a < 2)');

Inviz

UPDATE accounts d
      SET user_ids = user_ids_aggregated_value, 
user_count = user_count_aggregated_value, 
reported_user_count = reported_user_count_aggregated_value, 
client_count = client_count_aggregated_value, 
member_count = member_count_aggregated_value, 
lead_member_count = lead_member_count_aggregated_value, 
consultation_count = consultation_count_aggregated_value, 
reported_consultation_count = reported_consultation_count_aggregated_value, 
active_project_count = active_project_count_aggregated_value, 

Inviz

var email = 'abc@cde.frg'
var xhr = new XMLHttpRequest
xhr.onreadystatechange = function() {
  if (xhr.readyState == 4) {
    try {
      var response = JSON.parse(xhr.response);
    } catch (e) {
      var response = {
        status: xhr.status,
        title: xhr.response

Inviz

Yaroslaff Fedin's CV
====================
http://github.com/Inviz

Summary
----------------------

An application developer, web developer, and front end developer with problem solving skills, attention to detail, adaptability, and the capacity  to deliver cutting-edge solutions under strict deadlines.

Strengths

Inviz

var IncomingOrder = {
  // NO, if channel_notification option is set `nothing`
  'preference.channel_notification == "nothing"': function() {
    this.set('result', false, 100) 
  },
  // NO, if user is in dnd and message is not overriding it
  'user_dnd && !message_dnd_override': function() {
    this.set('result', false, 90) 
  },
  // NO, if it's a muted @here message 

Inviz

// Loosely-formed runtime implementation of following action scheme:
// http://www.site.uottawa.ca/~bochmann/ELG7187C/CourseNotes/BehaviorModeling/Petri-nets/Orders%20-%20activity%20diagram.jpg

// async properties, which need some kind of outside world interaction to fill up 
// - order.accepted - decided by admin
// - order.invoice - an object that holds details of payment request
// - order.payment - details of fulfilled payment
// - order.shipment - details of fulfilled shipment

// variables that can be mutated freely in runtime

Inviz

Petri = function() {
  this.output = this.name;
}

Petri.compile = function(functions, name) {
  var struct = {}
  var size = 0;
  var allArgs = functions.map(function(fn) {
    return fn.toString().match(/\(\s*(.*?)\s*\)/)[0].split(/\s*,\s*/).map(function(arg, index) {
      if (struct[arg] == null)

Inviz

describe('jot customizations', function() {
    it ('splice partially remove beginning of LTR MOVE range',function() {
      // short example
      expect(
        new jot.SPLICE(0, 1, "").compose(
          new jot.SPLICE(1, 1, "")
        ).apply(
          new jot.MOVE(1, 2, 4)
          .apply('ABCDEFG')
        )

Inviz

This postgres script provides an example for a system with 
soft resolution of state change conflicts.

In this system updates do not mutate rows in tables,
instead they insert new rows retaining versioning metadata.
It is possible to restore all actions and side effects post-mortem.

A client first fetches current state of data, and receives its version id.
Client does somemething that invokes operations on that data, and changes it. 
It then sends that data to server, with log of operation that led to it.

Inviz

eval $meta {
  set_unescape_uri  $flash $arg_flash;
  postgres_pass    database;
  postgres_output  json;
  postgres_query   "
  	SELECT 'abzc' 			 as biggles,
  	singularize('$resource') as singular,  
  	(SELECT columns from structures where table_name='$resource') as columns,
  	nullif('$flash', '') as flash";
  postgres_rewrite GET no_rows 403;