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The Callback Hell

mitchp — Thu, 20 Jun 2013 06:30:16 +0000

Originally authored by Martin Sustrik Preview Text: I've spent last month re-writing the code of nanomsg to use state machines internally, passing asynchronous events around instead of using random callbacks between the components. The change is complex, requires a lot of work and it is not visible to the end user, so the question is: Why do...

JikesRVM Optimizing (JIT) Compiler - I

Pradeeban — Thu, 20 Jun 2013 06:30:00 +0000

Jikes RVM includes two compilers. One is the baseline compiler, and the other is optimizing compiler, which is commonly referred to as the JIT compiler. Preview Text: Here, we will study the optimizing compiler in Jikes RVM. The package org.jikesrvm.compilers contains the source code of the compilers, where The package org.jikesrvm.compilers.opt...

A DevOps Linksheet

mitchp — Thu, 20 Jun 2013 06:21:16 +0000

Here's a moderately sized list of Books, Blogs, Articles, Podcasts, and Videos about DevOps, Continuous Delivery, and workplace culture. From the blog "Opus Magnus"...I’ve been indexing some resources privately and it’s become apparent to me that it would be useful to be able to refer other people to the original sources that are informing me. This is by no means exhaustive, and I do...

Thursday Code Puzzler: Harshad Numbers

jsugrue — Thu, 20 Jun 2013 05:45:22 +0000

Thursday - time for another code puzzler. The idea is simple: solve the coding problem as efficiently as you can, in any language or framework that you find suitable.Note: Even though there really is nothing stopping you from finding a solution to this on the internet, try to keep honest, and come up with your own answer. It's all about the participation!Harshad Numbers Preview...

Implementing Factories in Scala & MacWire 0.3

adamw — Thu, 20 Jun 2013 05:30:41 +0000

Factories are useful when we need to create multiple instances of a class at run-time, usually providing some parameters, but still without using new explicitly; we want to make some complex object creation abstract. The created object may depend both on runtime-provided data (the parameters), and some other “services”. Preview Text: ...

Mixins With Pure Java

michael-schnell — Thu, 20 Jun 2013 05:23:50 +0000

Implementation of mixins using AOP (AspectJ) or source-code modification (JaMoPP) In object-oriented programming languages, a mixin refers to a defined amount of functionality which can be added to a class. An important aspect of this is that it makes it possible to concentrate more on the properties of a particular behaviour than on the inheritance structures during development. Preview...

Lockdown Solr with IIS as a Reverse Proxy

softwaredoug — Thu, 20 Jun 2013 05:20:00 +0000

We’ve been developing rich client-side applications that talk directly to Solr’s HTTP interface from Javascript — requiring a publicly accessible Solr. One concern that you’ll naturally have with Solr is that by default Solr’s HTTP API has no concept of security. For example, after standing up Solr, anyone, from anywhere can browse to your index and delete everything.At this point you...

What’s the Point in Points? Agile Estimating with Dinosaurs and Bees

jamesbetteley — Thu, 20 Jun 2013 05:19:16 +0000

FUN With Points! Over the last few months I’ve been getting some teams up and running with Scrum, and one area I always seem to have “fun” with is introducing people to the points-based system of estimating. So much fun in fact, that I’ve decided to write this very blog post about it! See how much fun it is already? No? ok. When we do our estimating (during the planning sessions) we...

MOXy's @XmlVariableNode - JSON Schema Example

bdoughan — Thu, 20 Jun 2013 05:17:38 +0000

We are in the process of adding the ability to generate a JSON Schema from your domain model to EclipseLink MOXy. To accomplish this we have created a new Variable Node mapping. In this post I will demonstrate the new mapping by mapping a Java model to a JSON Schema. Preview Text: We are in the process of adding the ability to...

How to Zip Up a Release From a hg Repository

saltnlight5 — Thu, 20 Jun 2013 05:14:54 +0000

Did you know hg archive command can quickly zip up your project by given a revision or release name? This is very handy to package up a distribution and share with other who is refusing to use the same client. I wrote a simple bash script to do this with couple extras. It will create a zip file with a nice basename so it’s easy for unzipping. It also auto generate and append the...

FUN with FACEBOOK in Neo4j

egenesky — Thu, 20 Jun 2013 05:11:47 +0000

Preview Text: Ever since Facebook promoted its “graph search” methodology, lots of people in our industry have been waking up to the fact that graphs are über-cool. Legacy Sponsored: unsponsored

Getting Started with RabbitMQ in Java

faheem.sohail — Thu, 20 Jun 2013 05:10:16 +0000

RabbitMQ is a popular message broker typically used for building integration between applications or different components of the same application using messages. This post is a very basic introduction on how to get started using RabbitMQ and assumes you already have setup the rabbitmq server. RabbitMQ is written in Erlang and has drivers/clients available for most major languages. We are using...

Gelfand's Question

johncook — Thu, 20 Jun 2013 05:10:00 +0000

Gelfands’s question asks whether there is a positive integer n such that the first digits of jn base 10 are all the same for j = 2, 3, 4, …, 9. (Thanks to @republicofmath for pointing out this problem.) This post will explore Gelfand’s question via probability. Preview Text: The MathWorld article...

TeamCity and Git Behind a Corporate NTLM Proxy Server

dougrathbone — Thu, 20 Jun 2013 05:05:16 +0000

Recently I’ve had the pleasure of setting up a new build environment at work to replace our TFS Team Build setup and its build-information-opaqueness. In the process I uncovered a lot of not-so-fun-to-be-a-developer things that our large corporate IT Infrastructure team have in place to keep the masses at bay – one of those things is an NTLM proxy server. And so the head banging began –...

The Organizational Death Spiral

mcottmeyer — Thu, 20 Jun 2013 05:00:16 +0000

I’ve seen a pattern at a number of companies recently. It’s a pattern that demonstrates the danger of doing too many things at once. I call it the organizational death spiral. Preview Text: I’ve seen a pattern at a number of companies recently. It’s a pattern that demonstrates the danger of doing too many things at once. I call it the...