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My Priorities for Scala


What TypeSafe Should be Working On There was a Twitter thread that started off discussing Clojure REPL usage but devolved into a discussion of Scala’s compiler. An Aside Well, not an aside… My Clojure workflow is: use Clojure’s REPL to incrementally create code and once the code is right, write a test around the code and move on to the ...

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The SQL Language’s Most Missing Feature


SQL is also awesome in many ways. We can write out the most complex truths and facts and have the database tell us the answer in no time. But the SQL language is arguably the most beautiful programming language out there. It has so many caveats that people like me get ridiculously rich selling consulting services just to merely explain its semantics. One ...

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Master/Slave Failover for Camel Routes


One way to implement a master/slave failover pattern is to have a cluster of instances of an application where one instance (the master) is currently active and the other instances (the slaves) are on standby, ready to take over whenever the master fails. Some projects provide this kind of master/slave support out of the box: Creating a failover deployment for ...

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9 technologies to be discussed in 2014


According to 9 technologies for a supercharged 2014 there are a few important technologies that are about to increase programmers’ interest in 2014. Below, they are presented in short: 1. Document databases Structured storages and document databases have started to step aside, since NoSQL databases and big data solutions like MongoDB and Couchbase have showed up. 2. Key-value stores Couchbase, ...

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Android Tutorial : Two methods of passing object by Intent (Serializable,Parcelable)


In this post, I will show you an simple example of how to pass object by intent in Android application. Parcelable and Serialization are used for marshaling and unmarshaling Java objects. In Parcelable, developers write custom code for marshaling and unmarshaling so it creates less garbage objects in comparison to Serialization. The performance of Parcelable over Serialization dramatically improves (around ...

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Lesser-Known SQL Features: DEFAULT VALUES


A lesser-known SQL feature is the DEFAULT keyword, which can be used in INSERT and UPDATE statements. Consider the following table, created using standard SQL syntax:                   CREATE TABLE timestamps ( id INTEGER GENERATED BY DEFAULT AS IDENTITY(START WITH 1), t TIMESTAMP DEFAULT CURRENT_TIMESTAMP, CONSTRAINT pk_values PRIMARY KEY (id) ) Now, in ...

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On Java Collection Waste


This article is about overhead posed by one of the most popular frameworks used – I bet there is close to no applications where the java.util.Collections is not used. The article is based on the fact that the framework provides default values for e.g. initial size of the collections. So we had a hypothesis that most people do not bother ...

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Good vs Bad Leader


Software is more about people than technology. When I graduated from college, I thought I only had to master technical skills to be a great developer, thinking that people skills are the appanage of managers solely. But experience taught me a good lesson on this one. Whenever I hear that people skills can’t be acquired, and you have to be ...

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15 hot vs not programming trends


An interesting approach of what’s hot and what’s not in today’s programming is being presented in 15 hot programming trends — and 15 going cold. The 15 new trends of programming are presented in short: 1) Hot: Preprocessors – Not: Full language stacks Programmers nowadays do not create a new programming language. They prefer to just write a preprocessor that ...

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