Apache Spark is an in-memory distributed data analysis platform-- primarily targeted at speeding up batch analysis jobs, iterative machine learning jobs, interactive query and graph processing. One of Spark's primary distinctions is its use of RDDs or Resilient Distributed Datasets. RDDs are great for pipelining parallel operators for computation and are, by definition, immutable, which allows Spa
Following the instructions at the link below, I successfully built a REST API for my Django application: http://django-rest-framework.org/tutorial/quickstart. I can test it by doing the following from the Unix prompt: curl -H 'Accept: application/json; indent=4' -u root:myPassword http://www.myWebsite.com/users/ It works :) However, I would like to use the Chrome extension Advanced Rest Client to
You can find an overview of a lot of design patterns in Wikipedia. It also mentions which patterns are mentioned by GoF. I'll sum them up here and try to assign as many pattern implementations as possible, found in both the Java SE and Java EE APIs. Creational patterns Abstract factory (recognizeable by creational methods returning the factory itself which in turn can be used to create another abs
Are trailing commas standard in JavaScript, or do most browsers like Chrome and Firefox just tolerate them? I thought they were standard, but IE8 puked after encountering one—of course IE not supporting something hardly means it’s not standard. Here’s an example of what I mean (after the last element of the books array): var viewModel = { books: ko.observableArray([ { title: "..", display: functio
I generated two matrices of 1000 x 1000: First Matrix: O and #. Second Matrix: O and B. Using the following code, the first matrix took 8.52 seconds to complete: Random r = new Random(); for (int i = 0; i < 1000; i++) { for (int j = 0; j < 1000; j++) { if (r.nextInt(4) == 0) { System.out.print("O"); } else { System.out.print("#"); } } System.out.println(""); } With this code, the second matrix too
You need to partition your application into 2 pieces: 1) a web front end and 2) business logic. The business logic would be your C++ code. You really don't want to implement your web front end in C++ unless you have a lot of spare time and patience. Luckily there are a lot of web frameworks to choose from which are based on more modern languages. My favorite is the new ASP.NET MVC framework becaus
I'm building a REST API, but I've encountered a problem. It seems that accepted practice in designing a REST API is that if the resource requested doesn't exist, a 404 is returned. However, to me, this adds unnecessary ambiguity. HTTP 404 is more traditionally associated with a bad URI. So in effect we're saying "Either you got to the right place, but that specific record does not exist, or there'
How can I set the charset with JAX-RS? I've tried @Produces("text/html; charset=UTF-8") but that was ignored and only text/html was send with the HTTP header. I want to set the charset within a MessageBodyWriter, but don't want to extract the media type by analysing the @Produces annotation via reflection by myself.
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