Developers Club geek daily blog

We create the project with OAuth and NoSQL for $0,00

1 year, 11 months ago
Already long ago I wanted to try to create the project which would represent these JavaScript Application, namely the thick client, without backend and the hosting, on the basis of open source and some BaaS/DaaS. Besides I was finally tired of jsperf.com, of these senseless two steps, of absence though some code editor and normal search and of permanent loss of the tests, and history with kapchy which not always works finally finished me. I at last found time to perform long ago conceived and to kill two hares, having implemented alternative of jsperf.



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The digest of interesting materials from the world of web development and IT for the last week No. 189 (on December 6 — 13, 2015)

1 year, 11 months ago
We bring to your attention a selection with links to useful resources, interesting materials and IT news


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Games which are learned programming

1 year, 11 months ago


Education costs much. The good education costs very much. But nevertheless everyone has an opportunity to get a free and quality education. The companies and corporations around the world invest money in creation of free educational products. Partly, to provide itself with qualified personnel in the future. Partly, for overcoming of poverty, providing to all equal access to quality education.

Everyone has an opportunity to use the Scratch coding environment which is specially created for training of school students which is developed by specialists of one of the most prestigious technical educational institutions of the USA and the world — Massachusetts Institute of Technology. Or the game Minecraft for which Microsoft paid $2,5 billion a year ago and by means of which, including, is going to train children in programming. Or the training games which are created by enthusiasts and volunteers around the world.

Lack of information on their existence or ignorance of language can be an obstacle for use of similar resources. Really, English-speaking resources and games much more. But there are also Russian-language games training to programming.

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Haskell for VKontakte, JavaScript and ReactJS, Or "The stranger against Simpsonov"

1 year, 11 months ago
This post is attempt to add couple of drops of fuel to the machine of promotion Haskell, showing its use in daily tasks.



As those we will consider the following:

  • We implement a packet of access to API VKontakte.
    The code will work both in "native" applications, and in the JavaScript applications through GHCJS, the compiler Haskell in JavaScript
  • Let's write a one-page web application, using our API

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The source code of the Microsoft Edge JavaScript-engine will be open in January

1 year, 11 months ago
At the end of the last week at the JSConf US Last Call conference (Florida, the USA) we announced that we will open the source code of key components of our Chakra JavaScript-engine used in Microsoft Edge in the form of the ChakraCore project. The source code will be available on GitHub under the MIT license next month.


Gaurav Seth on a scene of JSConf US Last Call announces ChakraCore. Slides are available on GitHub.

Chakra – one from the best JavaScript engines with the biggest covering of opportunities of ES2015 and predictable performance, reliability and scalability. We assume that ChakraCore can be used in those scenarios where these factors play a large role: from cloud services and to the Internet of things and in other environments.

Today we are put in improvement of Chakra more, than ever, and we are glad to a possibility of development of cooperation with community for implementation of further improvements. Several organizations already told about the interest to make a contribution to Chakra, including Intel, AMD and NodeSource – we look with optimism at our future collaboration.

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Design in PostgreSQL of the dokumento-oriented API: Complex requests (Part 4)

1 year, 11 months ago

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How to write JS library on ScalaJS

1 year, 11 months ago
Scala.js opens the huge world a frontend of technologies for Scala of developers. Usually the projects using Scala.js it is web or nodejs-applications, but there are cases when you need to create JavaScript-library.

There are some subtleties in writing of such Scala.js of library, but they will seem acquaintances for JS developers. In this articles we will create simple Scala.js library (code) for work with Github API and we will concentrate on JS API idiomatichnost.

But at first for certain you want to ask why in general it can be necessary to do such library? For example, if you already have a client application written on JavaScript and it communicates with a backend on Scala.

It is unlikely at you it will turn out to write it from a blank sheet by means of Scala.js, but it is possible to write library for interaction between you and a frontend by developers which will allow:
  • to hide difficult or unevident kliyentsayd logic in it and to provide convenient API;
  • in library you will be able to work with models from application backend;
  • also you can forget an isomorphic code from a box about problems of synchronization of protocols;
  • you will have public API for developers, as at Facebook’s Parse.

Also it is the excellent choice for development of Javascript API SDK, thanks to all these benefits.

Recently I faced that at our REST JSON API two different browser clients therefore development of isomorphic library was the good choice.

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The digest of interesting materials from the world of web development and IT for the last week No. 188 (on December 1 — 6, 2015)

1 year, 11 months ago
We bring to your attention a selection with links to useful resources, interesting materials and IT news


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Design in PostgreSQL of the dokumento-oriented API: Full-text search and saving of many documents (Part 2)

1 year, 11 months ago
In the first part of this series of articles, I created good function of saving, as well as other function allowing to create the changeable dokumento-oriented tables on the fly. They work regularly and do that it is necessary, but we can make still a lot of things. Especially: I want the full-text search indexed on the fly and saving of many documents in transaction.

Let's make it.

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Design in PostgreSQL dokumento-oriented API (Part 1)

1 year, 11 months ago
This article is transfer, original article is here, the author of Rob Conery.

Postgres as many know, supports JSON as data storage type, and with an output 9.4, Postgres supports storage of JSON in the form of jsonb now — a binary format.

These are fine news to those who want to step further simple "storages of JSON as the text". jsonb supports indexing with use of a GIN index now, and also the special operator of requests who allows to get advantages of a GIN index has.

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