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Android Fragment transaction: FragmentManager and Backstack

Fragments are useful when we want to support multiple screen size. To manage fragments we need a FragmentManager that help us to handle trasaction between fragments. With transaction ...
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Guava’s EventBus – Simple Publisher/Subscriber

Looking over recent additions to Google’s Guava Libraries Release 10 I noticed the addition of EventBus. This is a lightweight implementation of a publish-subscribe style messaging ...
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Clojure macros for beginners

This article will guide you step-by-step (or even character-by-character) through the process of writing macros in Clojure. I will focus on fundamental macro characteristics while explaining ...
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Setting up Apache Hadoop Multi – Node Cluster

We are sharing our experience about Apache Hadoop Installation in Linux based machines (Multi-node). Here we will also share our experience about different troubleshooting also and ...
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Android ListView context menu: ActionMode.CallBack

In this post we want to analyze the context menu (contextual action bar). This is a menu that is related to a specific item. The contextual menu can be applied to almost all views but ...
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Running Map-Reduce Job in Apache Hadoop (Multinode Cluster)

We will describe here the process to run MapReduce Job in Apache Hadoop in multinode cluster. To set up Apache Hadoop in Multinode Cluster, one can read Setting up Apache Hadoop Multi ...
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Android: Navigation drawer with account picker – Google Drive SDK

This post describes how to create a navigation drawer with an account picker. Navigation drawer is a new UI pattern introduced in the last I/O. To do it I will use the new Google Service ...
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Java EE CDI programmatic dependency disambiguation example – Injection Point inspection

In this tutorial we shall see how we can avoid programmatic dependency disambiguation when injecting Java EE CDI beans. We have already shown in the Jave EE dependency disambiguation ...
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Reducing memory consumption by 20x

This is going to be another story sharing our recent experience with memory-related problems. The case is extracted from a recent customer support case, where we faced a badly behaving ...
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MongoDB to CSV

Every once in a while, I need to give a non-technical user (like a business analyst) data residing in MongoDB; consequently, I export the target data as a CSV file (which they can presumably ...
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