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User Stories are Rarely Appropriate

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All tools are useful when used appropriately, and User Stories are no different. User stories are fantastic when used in small teams on small projects where the team is co-located and has easy access to customers. User stories can quickly fall apart under any of the following situations:   the team or project is not small the team is not ...

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The Knapsack problem

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I found the Knapsack problem tricky and interesting at the same time. I am sure if you are visiting this page, you already know the problem statement but just for the sake of completion : Problem: Given a Knapsack of a maximum capacity of W and N items each with its own value and weight, throw in items inside the ...

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An Introduction to Generics in Java – Part 6

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This is a continuation of an introductory discussion on Generics, previous parts of which can be found here. In the last article we were discussing about recursive bounds on type parameters. We saw how recursive bound helped us to reuse the vehicle comparison logic. At the end of that article, I suggested that a possible type mixing may occur when we are ...

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Event Tracking with Analytics API v4 for Android

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As I’ve learned from developing my own mileage tracking app for cyclists and commuters, getting ratings and feedback from users can be challenging and time consuming. Event tracking can help by enabling you to develop a sense of how popular a particular feature is and how often it’s getting used by users of your app. In Android, Google Play Services’ Analytics API v4 can ...

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Daemonizing JVM-based applications

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Deployment architecture design is a vital part of any custom-built server-side application development project. Due to it’s significance, deployment architecture design should commence early and proceed in tandem with other development activities. The complexity of deployment architecture design depends on many aspects, including scalability and availability targets of the provided service, rollout processes as well as technical properties of the ...

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Introduction to writing custom collectors in Java 8

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Java 8 introduced the concept of collectors. Most of the time we barely use factory methods from Collectors class, e.g. collect(toList()), toSet() or maybe something more fancy like counting() or groupingBy(). Not many of us actually bother to look how collectors are defined and implemented. Let’s start from analysing what Collector<T, A, R> really is and how it works. Collector<T, A, R> works as a “sink” for streams – stream pushes ...

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Agile Myth #2: “Agile is About Project Management”

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This is my third post on a multi-part series entitled, “Agile Myths and Misconceptions”. It’s based on the talk I gave at the first PSIA Softech Philippine Software Engineering Conference. I am striving to correct 12 common misconceptions about Agile Software Development. Agile has equal or more emphasis on engineering than project management. Just check out the authors of the Agile Manifesto – a large ...

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Complexity is the Excuse

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When I speak to people about how it is possible to continuously deliver customer value with near zero issues, I usually get laughed at. After I tell them that there is nothing to laugh at, people start challenging me on how I integrate with other systems, how I manage defects, how I deal with changing requirements, how I manage regression issues, ...

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